If you find something you're really interested in, you'll try to do it. For example, playing a new videogame you love.
As for me, it was learning languages.
After that, other things become easier to do. I didn't even make my bed and studying put in me such a good mood that I felt like doing and cleaning.
Thus, my tidy apartment made me happy and I did some more productive stuff.
It's like a chain of events; you do something and something nicer follows.
At least that's the way it works for me.
MIND YOU! I'm bipolar and there are days in which I can barely leave my bed. I just learnt to live with those DOWNS.