People get over breakups differently. I got over many of my past relationships by dating a bunch of guys. I know many people would advise not doing that. But I did not do that for 3 years, and I still couldn't get over him so I decided to try something new and it worked! Being obsessed with an ex is related to a scarcity mindset and lonliness (what I noticed but of course, you can't generalize). Dating other guys solves both issues.
Channel that negative energy (anger, sadness) into something positive. Work on yourself to make yourself more attractive and accomplished and show him what he is missing out (well, you don't necessarily have to show him but you can show yourself).
Also, make new friends, reach out to people to talk about your issues and heartbreak. Talking it out really helps.
A strong woman takes advantage of help she can get from people around her but she doesn't rely on them for anything
She uses logic and manages her emotions
She offers help either because it is a business transaction or out of kindness. It is never because she hopes others will return the favour or out of fear of losing them
She has her own mind and thinks for herself and knows that she has to be the one who bears the consequences of her decisions