I can barely find any alt/btc pairs that look constructive right now.

And this trend continues to be respected, as it has done for the last two and a half years.

Continue to scrutinise the alt coins you hold. Every week you should be retesting your conviction and theses. If you feel sure a project will do well in the future then that is fine.

But don't continue to hold coins just because you've held them for a long time.

Stomach the pain and rebalance where required.