I can understand what you mean. When one door closes, a hundred more open up also means when one door opens, a hundred more closes.. It's a matter of perspective though and I think it would help if we have an optimistic outlook.
Most of the regret feelings are imo just a "grass is greener on the other side" side effect. There is a ancient proverb called "yeylaym nalaitynui", what it means in English is that whatever happens to us, in the end it will be alright. I live by this tbh, there is a kind of comforting optimistic reassurance to it. No matter what happens, in the end it will be alright. We'll all end up living good lives and enjoy a lot of good things. Stressing about it will just make everything....stressful
Most of the regret feelings are imo just a "grass is greener on the other side" side effect. There is a ancient proverb called "yeylaym nalaitynui", what it means in English is that whatever happens to us, in the end it will be alright. I live by this tbh, there is a kind of comforting optimistic reassurance to it. No matter what happens, in the end it will be alright. We'll all end up living good lives and enjoy a lot of good things. Stressing about it will just make everything....stressful