Deep reflection is helpful, but only to a point. It may be time to put aside your sadness and move on.
Happiness isn't about working yourself into an early grave so that you can buy things that you don't need in order to impress people that you don't know or like. Don't get caught up going round and round in a cycle of endless consumption. It won't bring you the happiness that you seek. It's just a distraction.
Sometimes it pays to tell people that you don't know how to do something and ask for help. It could be exactly what you need to progress.