Before I Go

I originally bought SLR at$3.01 on 14th Jan 2013 I sold it at .78 cents 21st May 2013
I bought it again at .78 cents 24th Sept 2013 I have held it ever since
Around FEB 2017 could have nearly broken even .
I feel like I should have taken the money in February and run for the hills I didn't
And now I am thinking time here is done time to move on when I do this the stock almost invariably will rise approximately 89 % of the time .
So before I go can anyone please explain why I should still try and stay a bit longer before I wipe my bottom AGAIN and move on.