I love Rich's reply, but disagree with this concept in the follow-up.
You must love yourself. But, the thing is, you do. Everybody does. It's impossible not to. Even if we do the most selfless acts, it's because that is what gives us the most sense of satisfaction. Yep, we're back to ourselves.
Jesus does tell us to love selflessly. But that does not preclude loving ourselves. In fact, He made it very plain that we naturally love ourselves when He commanded us to love our neighbors as ourselves. In other words, don't be a narcissist. Love others to such a degree that your greatest joy is in loving them. It's a choice (if it wasn't, it couldn't be a command) - one that rewards both the giver and the receiver.
Even Jesus' work on the cross was both an act of selfless love and an act that He knew would ultimately bring Him the greatest joy.