More accounts blow up from position sizing more than bad stock picks.

(Nobody talks about this)
You can be right about the company & still blow up the account.
If you size the put too large & get assigned a bunch of shares you do not have the money for, you may be in trouble...
Keep ratios in check at all times.
Not just when markets are calm.
Only sell puts on companies you actually want to own at that strike price & have the capital to buy them.
If you would not buy the stock there, do not sell the put there.
Good structure survives bad markets.
Bad structure does not survive anything...