What If?

Everything is just getting too hard to bear. I mean, I'm in the verge of giving up and breaking down. I'm getting a bit too paranoid and I'm about to get suicidal. I was thinking, what if I had the ability to forget a part of my life and start anew? Wouldn't that be better? What if it was possible to just store the happiest moments of my life and totally exclude the bad ones. Wouldn't that be fascinating? I badly need an imaginary eraser to terminate this unwanted memories. It would be better if thats possible.