I "budget" my week and allocate hours towards different activities. I have a couple of priorities (exercise, date night, reading, cooking/eating, a class on tuesday nights, projects around the house) and then I set my weekly schedule budget.
I know I have x hours of time to allocate after work each day. 1 hour for exercise, Thursday is date night, 1 hour of reading before bed, and then I can fill in the hours between with whatever else I have left.
And obviously life happens so my "weekly time budget" needs to be flexible. But it is pretty good at reminding me to do a workout the hour after I get home from work, then making dinner, then studying/writing, then reading. If that doesn't happen exactly right every once and a while, it isn't the end of the world.