Focus on the positive & good things in life & not dwell on the negative which could lead to bad or worse things in life. If you want to focus on things that have inspired you to do good, then you're on the right track.
The nasiest prank I pulled was sending a certified letter to a couple of former friends of mind notifying them of a pending lawsuit from a former friend of theirs who wanted to sue them for slander & agrivation. Once when they got that, they flipped! They found out later when they arrived at the...