I have hodled and diversified as far back as I can remember and did better than my friends who are full time traders. I cash out when I see major red flags that can prove even more catastrophic. (e.g remember when I called the Bancor shadyness after the ico and cashed 1/3 of all my ETH positions equally- including BTC). That was pretty much a tipping point for all the entire market. (at least according to me. I know correlation is not causation and I might have been lucky).
My plan is major exits when I see red flags and then when there is blood everywhere I bulk up on everything between 20-30% drop. everything that drops more than 50% i never touch it ever again.
It's been tough for traders to beat the market, I mainly HODL. With a little more time and focus on crypto rather than trading commodities, the markets in crypto are significantly less competitive to make money in.
Good call on ETH, I doubt it was due to luck, there was just a point where it got ridiculous and you managed to pick up on it.