Oftentimes when I talk to someone with the "entrepreneurial bug" who wishes/wants/hopes/dreams of starting their own company, they usually have a laundry list of items that first must be conquered or achieved or completed before they can actually do it. Many of these laundry lists are 100% legitimate and I certainly don't mean to belittle going about taking over the world with a solid gameplan...but--there is always a "but," right?
I also believe pretty firmly in the fact that there is never really going to be an ideal time. There will always be some reason or circumstance seemingly standing in the way of you taking that leap, but when else would be the right time to follow your dreams except for RIGHT NOW?
Here's a pretty great article about this very topic (blue flavor via Lifehacker).