For me i don't really welcome much losses, I try to make sure my trades are good enough and onset and if a trade gives me a loss I will check if I got enough equity I will do hold on the trades and be rest assured it will end up in profit. Well I think the amount of loss I can handle depends on the account size, if I got a bigger account then I can handle up to 3 or 4 loosing trades and if the market doesn't moves in my favor I will know such strategy isn't working for me any longer so I did change pattern of trading