I accidentally reset my combination lock (my fault but still irritating) and had to cut it on my own.

I am using a lock with a key (Masterlock) right now but it only has one key since the other one broke inside of it.... I would like to hear about your experiences with what works best I am not locking up anything of great value currently but was unpleasantly surprised at how easily I was able to cut my own lock (yes, I was extremely frustrated but still...). Plus I saved the $45 the campus bike shop wanted to charge me

Thanks!