I started self harming in mid 2012...

I recently went to america for 3 months where i managed to not self harm.. I guess it was because I was busy all the time and had was living with other people so there was no real escape.

Now I'm home, I've been feeling ok, nothing bad and nothing great but today I suddenly released that I was holding my blade in my hand, I didn't do anything with it but the I was tempted!

I don't understand why now? Am I going back to my old ways again!?