There is no real “law” of reciprocity in life. You will not always reap what you sow but many times what you sow will somehow disappear, usually by being ignored or stolen by someone else.
That being said, life is seldom if ever fair. Once you face this, you will understand a lot in your life and hopefully live it with great care to your decisions and how they effect you and everything around you.
Not everything is your fault or your responsibility. You cannot control other people or situations to a large degree so don’t try. Do what you can, what you must, but sometimes you just have to let things play out.
It is said that “things will pass” but that does not mean that it will not damage or even destroy some of us. We have seen it or sadly experienced it.
We all differ in our resilience but developing intestinal fortitude will carry you though most of life’s challenges.
It’s OK to let someone else do it. Regardless of some of the hype, you can’t have it all or even some of it at times regardless of how hard you try or how much you want it.
Just “believing” means nothing. What do you believe in? It could be a Fairy tale and that would be foolish. Believe in yourself to keep trying. Believing in God to give you the strength to keep your faith is something worth believing.