A new mentality that I've been working with is the idea of chaining kills.
- Come up with a play that I want to go for (util, direction, etc.)
- Go for not a single kill, but a multikill
- Expect more than one
- Have a gameplan for getting not one, but 5 kills
It is interesting that taking the offensive makes you much better at being confident. Also, expecting multiple attackers and working on killing as many as possible makes it a lot harder for people to catch you with a trade.