I've been scalping NYSE stocks for almost 2 years and I'm happy to say that I make a decent living on this. I consider myself to be a relatively good scalper, but when I buy to hold overnight things don't work for me. I'm good at recognizing very short-term situations, but I'm an awful swing trader. The good thing is that I don't do it quite often. But I'm aware that holding positions overnight offers the best rewards. That's why I'm interested in approaching it more seriously, without leaving my scalps. Any ideas? Any recommended literature?