When to close?

I think trading is extremely difficult. I also think trading is a mental battle to yourself. I believe so many traders find it difficult to close an open position at a best place. And I'm the one who found the same.

Almost after 20 hours from the opening of the trade, I'm still wondering when I should close it.

I think it's extremely difficult to keep sound mentality when you trade, and I'm no exception. I'm only a human, and have no idea how far it would go and when it reverses. My assumption was wrong so many times in the past.