Here are two simple rules my trading mentor who's been in the game for 30 years taught me.
1. Put 5-10% of your net worth in crypto. No more as you might lose more than you can afford, no less as you won't see much difference.
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2. Have a strategy. Every month, on a particular day you have chosen, take 50% of your profits in fiat. No ifs, no buts, no waiting for the market to get better or for the price to rise because you "know it will rise 100%". And when it comes to the other half, invest 50% of it in assets you believe in for the long-term (Bitcoin, ETH, Neo, etc.) and leave the other 50% for speculation (alts, shorting).
I myself have broken these rules on a few occasions as I got greedy and it didn't end well so I had to HODL, check my portfolio every 5 minutes, deal with a massive amount of stress...
If you leave the decision-making to the strategy you follow, not to your emotions, it will make the whole thing much less painful. These two rules are super simple to follow.
"But I made most my crypto money from crypto." "But I am sure there will be a bull run, I will make more money when I put all my savings." "Why only 10%?"
You can NEVER be sure if a price will go up or down. Even technical analysis can mislead you as the crypto market is not regulated, it's the wild wild west and anything can happen. ANYTHING. Good or bad.
awesome..