Never quit Something with great long term potential just because you can’t deal with the stress of the moment. And forget the cliche “never give up”. Sometimes giving up is exactly what you need in order to get back up.
Lastly, if you’re going to quit something; quit before you start. This way you have not invested a lot in the thing and it will be much easier to quit then than later when you are deep in it or you will just be one that starts many things but finishes little.
Frank's Blog 