Gardens are run on enthusiasm, not guilt or self-discipline. Sure, the "I should" messages can force us to do the chores occasionally but for long-term motivation, focus on "wanting" to be there.
My favorite trick is to take a cup of tea and walk around. Since my hands are occupied, I obviously can't pull that weed or move those pots. All I have to do is appreciate what's there. Then, of course, I start getting ideas of what I want to do and next thing I know I've finished the tea and I'm repotting something.
If I can coax myself out the door, I'm hooked.