I have won a lot in the past months
BTCBut in the last month I suffered heavy losses

What do my trading friends tell me to go beyond this difficult period?
Well the only lesson i learned from trading is , NEVER sell low or at a dip . If you messed up and bought high then the coin went down , Just wait for it to go back up and sell , you might not take a profite or lose a little but never sell when you are down by 10% or more. It's not a loss if you don't sell keep that in mind . You might lose time but not ur money.