Why do I have FOMO while all of my bags are growing?

The recent alt-boom hasn't replaced my FOMO. As all of my investments climb 10, 20, 30, 100%, I can't help but look at past sales and thing WHY? Sure, I missed 20% gains over there so I could get 15% gains over here.

How do you all manage the FOMO when seemingly every alt is taking off? The BTC consolidation won't last forever.