Balmerhon, if you could just get into a routine of working out when you get home, you will find it easier. Routine has been the key for me. Trust me, I never would have thought I would enjoy exercising and actually look forward to it, but now I do, most days. What I do is, as soon as I get home, I change into my workout clothes and put on my trainers. I mean as soon as I hit the door. Then I have a glass of water and do the workout. It's only 30 minutes-1 hour. Then I've got the rest of the evening to do other things. It has really worked for me.
Give it a go for a week. Just a week!!