I don't really know I am also dealing with a breakup
it's better to understand your emotions presently! what you are feelings, sadness? occupied with racing thoughts? that's natural to feel that way- it might remain the same for sometime now! accept the situation and keep your self busy!
there are two situation, first is someone want to quit you. second case, you want to quit. both nee different kind jf aproch, aslo depend up on the cause of separation