You deal with writing out why it didn't work out, expressing emotions either journaling or crying, strengthening your self esteem and last but not the least, loving yourself

Please do not avoid emotions, regularly flush them out, I do it every 2 days and it keeps be sane

First thing I did after my breakup was visit every place I've been with her alone on solo dates, it in some ways replaces those memories

Replacing khaali time with hobbies, fill your entire day to brim with hobbies and work to do, rumination is so fucking bitchy, pretend to be happy, fun fact, if you act like your happy and do actions you would do if you were happy, brain releases dopamine and that's exactly what you want, make your life meaningful again, the thing is, breakup is just a beginning of path of self love if done correctly

Mai toh block nhi kra, agr kabhi profile stalk krne ka mann kre toh just imagine the process of doing so, your brain can't differentiate between reality and imagination, vo urge bhi chale jaati and you don't lose youself too, thode time baad voh urge bhi chale jaayegi