Comment by tylerhobbs

3% of $1.5m is only $45k. If you and your spouse can live off of $45k while you're still earning, you can save ~$100k per year and accumulate $1.5m by the time you're 40, easily. See Mr. Money Moustache for details on how this isn't as unreasonable to do as you would think: http://www.mrmoneymustache.com/