If I set a 3% loss on my initial investment as a stop loss and a 10% profit as a stop for selling, will that make me trade too often ?
Trading is a forced phenomenon IMO.
It's upto a user's will whether to choose to trade or not.
And as you stated about the 3% and 10% thing, that is completely upto you. No one can tell you that this is the best percentage when you should withdraw the funds or want to trade more.
But I can say you that if you make 10% profit, then that's a great thing and you should trade more in order to gain more profit.