Forced smiles are always painful. The more force you put into your smile, the more it hurts your jaw, and you can feel it. The same goes for many things in life.
I know you are aware of it. Whenever you try to force yourself into doing something, it can lead to pain and disappointment. I'm not trying to say that you are always wrong for forcing yourself to do something that requires effort but will eventually lead to something good. Here, I'm talking about those things that won't bring you anything good and will only leave you losing your strength and mental stability.
Things that are done forcefully don't always stay for long. Actions that come from forced emotions aren't always genuine, and they don't last for a long time. The thing you need to do is think properly and wisely because your emotions are involved in everything.
In the end, you may be left feeling numb, disappointed, alone, and overwhelmed. Sometimes, you may feel nothing at all, and you become so blank that you can't even understand what just happened or what is happening.
You tire yourself by putting effort into things that don't value your efforts. But that doesn't make you a bad person. Don't take it that way. Don't allow negative thoughts to overwhelm you by making you think that if you did something wrong, then it means you are completely wrong and will always be that way.
Mistakes can be improved. Nobody becomes a loser just because they make mistakes. You become one when you refuse to accept your mistakes, justify them, and try to bring down someone who is genuine. There is a huge difference.
Think before you put your efforts into something. Thinking is important, especially deep and wise thinking. Your past isn't going to shape your future. Your present does, so pay attention to it.
It's never too late. Sometimes, all you need is a mindset that doesn't allow negativity to completely take over you. Take your time, understand yourself, and choose what is truly worth your energy.