I guess it depends on what's causing the burn out. I've never really felt burn out until this past year. We were so swamped that we literally didn't have a day off for months. That made me hire better, delegate more and be less of a control freak. Damn near killed me. You could also burn out due to lack of work. Nothing makes me wearier than the phone not ringing. Since we are mostly restoration, I've had to come to terms with that. In carpet cleaning you need to get out of your comfort zone. While buying a new piece of equipment or attending a tradeshow or class might help you, it probably ain't going to get the phone ringing.
For me my goal was to grow my company. We've done that and are continuting to do that, and that presents other burn out issues. I've been doing this so long I forgot what it is I like to do for fun. I've found there's 2 sure fire ways to get work.
1. Buy a plane ticket and plan a vacation
2. Be so sick you can't go to work (like yesterday) and the phone rings off the hook.