How to win your ex boyfriend back?..?

My boyfriend of years broke up with me over a day ago. He's just started uni and i'm in my second year (he had gap year); he's finding studying really difficult (not really cut out for uni) and spends literally 24/7 doing work and so the last few weeks have only been seeing each other a few hours a week which i have been unhappy with and he picked up on it which made him really unhappy and moody (because he couldn't do anything about it). And said that he ';doesn't want us to end up hating each other because of it and would rather end on a good note and it's really unfair on someone, especially you to not be able to see you because relationships take work';. He said he can't be in a relationship with anyone right not because of his work. And everything else is going so amazingly and i know 100% that's the only reason he's breaking up and really wants us to stay in contact and be friends. He was adamant i was unhappy (making him unhappy) even tho i said i'm now ok with not seeing each other much. I want us to be together soo much and i feel so lost and confused. I can't say a bad word about him. :'( any advise (especially on how to get us back together eventually)?How to win your ex boyfriend back?..?
Accept the things you cant change. it will be really hard at first but time is the only answer.. before trying to get him back completely, think long and hard about your guys relationship and if getting back with him is honestly worth it.. if it is then i would write him a letter explaining yourself and your deepest feelings for him.. if hes that important dont let anything get in the way.. i hope i helped and good luck.