I'm going back to work on Monday as well.
The obvious one for me will be taking lunch with me from home every day. I do that some of the time already but there's always a tendency to be lazy. No way am I venturing into the Tesco near my work unless I have to though.
I also usually walk to work a couple of days a week but take the car 3 days a week because I have to drop the bairn at nursery on those days and it's a time thing. I've ordered a bike that's due with me in July. From then on I'll walk 2 days and cycle the other 3. I've not really missed the car at all and £20 of fuel lasting 6 weeks is something I could get used to.
Hopefully I can keep up with a lot of the cooking I have been doing. I generally cook from scratch anyway but I have about 4 or 5 dishes on repeat for easiness. I've enjoyed making different things and time wise it's not that big a commitment.
Finally I'm definitely going to try and be more of an involved dad in future. I'm not a bad parent by any stretch of the imagination but I work 5 days a week so my time with my daughter is limited to midweek evenings. I've enjoyed spending more time with her and if sacrificing the odd Hibs game has to be done in future to free up time at the weekend then so be it.