primarily SEP-IRAs and life insurance investment vehicles...
and for everyone who says "i'll worry about that when i get older"...
i got into my late 40s, realized i didn't have much of anything to rely on in retirement, and went into a semi-panic before settling down to do some real planning. luckily, in this business you can make up for lost time pretty quickly - most people in most businesses don't have that luxury.
if you're in your 20s or 30s and can put away some money now - it will build up for 30-40 years and you'll be living pretty
