I've also been trying to be more conscious of where I invest my money in (although I always have, but I'm doing it more now), and more importantly where I invest my time and energy. I've realised that you can't really get time back (really realised it), and that before you know it, it feels like you wasted all of it, along with your energy. So I've been trying to practice the art of not seeking instant gratification when I can (where you youtube and check your feed when you're feeling down to up your mood) and even if I find myself watching a drama or something, I am trying to make sure that I'm doing it because I want to, and not because I'm avoiding something (like an assignment).
I have learned to not feel bad when mummy asks (like she just did two seconds ago while I'm writing this), "are you studying?" when I'm not. Yes, study is important, but if I know I'm going to study later and has set time aside for it, I'm not putting it off. But just putting in time for myself. Things like that, sunny, has made my life a little easier. Somedays I'll feel really good, sometimes I'll feel really lethargic, and I'm doing the best to make the most of my "good" days. And as for the bad ones, I just accept and know they'll past eventually.