How are you storing your Bitcoin?

• If you add small amounts to your wallet each day, you should read Fees are low, use this opportunity to Consolidate your small inputs!. Not so long ago, when fees were high, I've seen people who literally had worthless Bitcoin dust, despite it being worth hundreds or thousands of dollars.
• If you're keeping your coins at an exchange, you should get yourself a more secure storage method.

It's virtually impossible to time the market. I regret not selling most of my alts, only a few went up long-term. I still hold on to them, and sell a small amount once it goes up to a price I like.