Time will heal. Promise
Now, the manly advice; she dumped you quickly, phew lucky escape; no house, joint accts all that shit, clean break, done. She doesn’t realise what she let go, her mistake. Blah blah blah
DO: go and do stuff, join clubs, meet interesting people (who no nothing about this) now is your chance to go and learn flamenco like you’ve always promised yourself. Above all else, go out and have fun with NEW people. The world is literally full of interesting people doing all sorts of stuff go join in their fun.
DONT: sit at home thinking about your ex (she’s not thinking about you, she’s getting on with her life) don’t drink, don’t eat shit, you’re just reinforcing her decision to leave you.