I also had that problem a few years back. It is not a bad thing as long as it’s not carried too far. Extremes are normally not good in anything. My cure; I accepted who I was in this area --- Then decided I had to modify some of my thinking. While I was still playing jobs I bought the best and spent much. My clothes are not great but I have two top line great keyboards and five excellent guitars – and I have no excuse for spending because I no longer make a living playing out.

Learn to love yourself, you deserve it, but no overboard spending.

IMHO, John C.