altcoins are just a measure of the mania. it is a saturated market. Sure there was a window where it made sense to mine/trade, but once the dust settles, the volume will shrivel up, there will be no more buyers and prices just implode.
Prices already imploded, and threads like this one (
everybody Bearish) means it might be time to turn Bullish soon.
Talk about best time to buy, when I started the thread, I was all in btc with multiple bids 30%-50% below market price, then I wake up the next morning. All my bids got hit, and some of them fell another 20% from my bid. Even worse, there is no dead cat bounce. It just stay at new bottom. Is it best time to buy? Or is it going to die? I am in panic mode
The lack of a bounce is even worse than getting behind, since every bounce gives you a chance to take small profits and lower your average cost even more.
When I'm "in too deep" and cannot simply buy more, here is what I do:
Sell ~20% even if it's at a loss and put in orders to buy back lower. Now if it goes down you improved your position (at least a little) and if it goes up (enough) the other 80% will still make money.
Recovery takes time, but you can dramatically improve a situation with several "day trades"...
It doesn't matter which direction the market moves, it just needs to move,
and bounce. 
It is such a long wait. now even ltc is lossing support