Hi Mike,
I’ll be positive towards you and wish you all the best in changing and hope it makes you happier. Happiness is the most important thing nowadays in what you do as you’ll be doing for a lot longer than our grandparents did and our parents will do! 
I’m coming the other way had enough of the professional career and it’s supposed trappings (I’ll let you into a secret there are none here either
)
I’ve had a play on trucks since 2005 (and was first put in Dad’s cab at three weeks old, as that was only where I would sleep properly for my mum, what an annoying zb I must’ve been
) and keep my hand in with the agencies since and I’ve got the bug and had the itch to come back for years but wouldn’t do it until after I got married and the missus was settled in her job.
Now it’s my turn coming up in the next 18 months. 
What Tarrman says is true I have a close friend who was a Sainsbury’s nightshift/warehouse manager until 2007 in the major restructure he left shelf stacking and the paperwork. He averaged 65 hours a week in retail only paid 40 hours a week other 25 expected for free otherwise they’d force you out! He’d done that since he was 16 and had been doing it 20 years by then. He managed to keep his old wages and works the forks at Basingstoke Sainsbury’s Depot to this day. Said it was the best thing ever as he only does 40 hours a week for the old wage.
Also met many Sainsbury’s warehousemen in my time with them, who were ex-HGV and loved the job in the warehouse and others who detested the warehouse but were stuck e.g. drink driving or some other stupid indiscretion. Each to their own!
After 5 years for myself I had to change. Seeing them same walls everyday and as Carryfast said
The problem is every hour in a factory or a warehouse seems like at least four of driving a truck for a living.You won’t believe how slowly a clock can move
Ironically I am going to have a lot of mortar rounds come in and have my tin hat on here for this but I agree with what has whole heartedly been said by (I can’t believe I am going to put these names together in one hit now) these following people as they all make sound sense:
Saaamon
SmashedCrabFace - So much truth spoken about alternative careers and their “supposed” benefits of being better than a HGV job! Can you tell what side I am on yet
Carryfast - Many a day spent trying to wish time away!
Mike-C
iDriver - This man has spoken the best advice I have seen anywhere for years and I wish I had got this before I took my current job role, as this truth hurts me a lot inside, as I am living a current vocation mistake/blunder! And it is so true, if you take one thing of this post it would be these two paragraphs!
eric the judge - Good advice on balancing
Muckaway - Good solutions
drummerkev - Good solutions
Silver_Surfer - Good solutions
switchlogic - Speaks a lot of truths on this posting about getting a balance.
leehellcat - Sums up my professional job as an Engineer (average weekly shift 70 hours for the same money as an artic driver) - last longest shift ever ironically last week 23 hours straight with 6 hours driving 3 either side of the shift, as we couldn’t afford a B&B on the project budget. My assistant couldn’t drive - no licence - I’ll get hit for this too but thank god for tachographs - Trust me non-driving jobs will exploit you big time as soon as they can, the tachograph is your friend in some ways!
I’ve done labouring, undertaking/pall bearing, warehouse work for Sainsbury’s stores and depots, construction in three types of disciplines and of course driving. So I too have seen a few different careers/jobs, a lot like others on here and that green grass has more problems with it than can be initially be seen. I’ll let you guess which one I enjoy coming back too and getting calls from the agency at 2am on a Saturday morning!
TTX boy -
I dont know of any other job where you dont get paid overtime after you’ve worked 40hrs !
Come join me in engineering for a week by Wednesday we are working for free as contract states you are paid for a 37 hour week - site hours will vary as required to complete a job as dictated by the company, no overtime payments unless a weekend (they never happen as the company has to pay out).
But we exempt of the Working Hours regulations if you don’t sign the form you don’t get the job - Good company hey! If you don’t like it quit we’ll have another person in your job tomorrow, which is the truth in my current game. Hang on this sounds like (HGV companies, supermarkets, bookmakers, solicitiors, management consultants, actually most jobs in the UK at the moment!)
All for £6.80 for the true hours or £13.00 contract hours only. Ashamedly most average Class 1 jobs pay more as do Class 2 jobs down my way! That salary is me being lucky compared to other engineers I work with as I have a degree and a chartership qualification.
As I want to get off the final soapbox now I’ll leave Smashedcrabface quote to remind us all about the proverb the grass is greener on the other side… yeah right 
+1
I wish all these moaning old [zb]s who have driven all their lives and never done a proper days work would just [zb] off and stack shelves in Tesco without preaching to the rest of us.
I’ve stacked shelves in Tesco. I’ve worked in a factory. I’ve worked in an office. I’ve worked on the road bullying old people into buying stuff they don’t need and can’t afford. I’ve shovelled [zb] and I’ve driven a taxi…and do you know what the easiest money I ever earnt was? I’ll tell ya. It’s the job I do now; driving an artic from A to B and back to A again.
If you can’t hack that, you sure as hell ain’t going to be able to hack a real job.
I hope this helps.
Never a truer word said in jest!
Back to the post I wish you the best of luck Mike in your future choices and I hope it goes well for you sincerely I mean that! 
C