Every time I get that feeling that I am trying too hard with a girl, guess what? I am. Anytime I get a feeling I am doing anything too much with a girl, texting, talking, doesn't matter what then it's already too late because it means I am actually doing it. By the time you feel you are doing too much of anything, it's too late, you already are.
The only thing to do at that point is just to stop doing whatever you are doing too much of - literally, just STOP. It may seem weird to just stop talking, for example, but it is much worse to continue. The second thing NOT to do, is don't apologize for your behavior. That will only serve to acknowledge it and make it worse. Just STOP. Think of yourself as a car, before you can backup you have to stop the car first. Nothing will kill the interaction faster than acting too needy and nothing shows neediness more than trying too hard.
The only thing to do at that point is just to stop doing whatever you are doing too much of - literally, just STOP. It may seem weird to just stop talking, for example, but it is much worse to continue. The second thing NOT to do, is don't apologize for your behavior. That will only serve to acknowledge it and make it worse. Just STOP. Think of yourself as a car, before you can backup you have to stop the car first. Nothing will kill the interaction faster than acting too needy and nothing shows neediness more than trying too hard.