The biggest problems in our lives are usually the ones we make for ourselves. Alistair Overeem has recently had a rough stretch of time. Within the span of a few months, he nearly missed out on a No. 1 contender match with Brock Lesnar after a drug testing debacle, engaged in a messy lawsuit with his longtime team Golden Glory, faced a possible jail term for a battery charge, and flunked a random drug screening.Luck may or may not be a real thing, but such a confluence of events can’t simply be…