I started using Twitter about year after its very early adoption and ended up investing in it around that same time. I'm involved with the Tech scene and companies ranging from Facebook, Stumbleupon and Twitter.

I'll repeat something you might consider tattooing on your forehead: What we fear doing most is usually what we most need to do.

People feel personally slighted if you don't respond to them in 30 seconds and treat email as instant messenger.

But if it's tolerable mediocrity, and you're like, 'Well, you know it could be worse. At least I'm getting paid.' Then you wind up in a job that is slowly killing your soul and you're allowing that to happen. Comfort can be a very, very dangerous thing.

Which 20% of sources are causing 80% of my problems and unhappiness? Which 20% of sources are resulting in 80% of my desired outcomes and happiness?

Being selective-doing less-is the path of the productive. Focus on the important few and ignore the rest.

In all cases where doubt crops up, ask yourself, "If I had a gun to my head and had to do it, how would I do it?" It's not as hard as you think.