sleep. exercise. eat healthily. spent time with great friends.
most importantly, put time aside to spend dealing with the emotions that come up. don't bottle them up. they will be expressed in destructive ways when you least expect it.
see a therapist if necessary; having someone help you get through growth roadblocks is the best money you will ever spend.
realize that whatever you're dealing with will eventually pass, despite being difficult to deal with now.
and know that there are no hacks for emotions. difficult times need to run their course and the best way to cope is to process your emotions.
good luck and know that we've all been there... dealing with difficult issues is a more challenging part of the human experience, but it also presents great opportunities for growth.