Personally, once I have sold I will stop watching the line. Best to focus on that content feeling knowing you have made a profit than watch the line continue to rise with the feeling you could have stayed in for longer. The danger is that this feeling may get the better of you, leading you to buy back in...
I know that feeling of re-entering the market, mistakes in trade are paid with money
haha! Me too my friend. I know that feeling all too well now, which is why I thought to mention it ;)