If you're ever in Cambridge, go to The Cherry Pit. It's great. I go there at least once a week.
Build little rituals for yourself. Begin little traditions.
Take more photos of yourself. You wouldn't want to look in the mirror one day and not recognise yourself.
Curate your space. It's a reflection of yourself.
Change your bedsheets more.
Remember that 'nothing' can be something in and of itself. Sometimes you gotta just do nothing.
Get some yellow, orange, or rose tinted glasses. It will literally make the world more beautiful.
Hug your mates.
Don't buy so many lunches, bring something from home.
Stay hydrated.
Dissolve vitamic C tabs into your water every now and then.