There are many different possible systems. You just find one that works for you
most of the time, make all rounds similar in size, and you'll find yourself net green in the long term. Finding a system takes times and funds (the "lessons" or "classes").
The Hairy way is an excellent starting point, and not that hairy to implement after all (except for the judgment call).
If aiming realistically and conservatively, it doesn't take a unicorn to do that.
If you can learn the difference between a bear market and a bull market (hint: we are in a bull market) then you can trade for a profit. Dollar cost average in in a bull market. Dollar cost average out in a bear market.
If you cant tell the difference, then sit on your hands.
It doesn't even take a WO peep (well, just as a brainwasher maybe).
Gotta admit to the humor, which caused me to wonder, what I had said, exactly.
-snip-I think that my suggestion that she should liquidate some BTC had helped her to shave off about 3-4% of her stash around $11k since she had not sold any BTC during the whole of 2018 until just in the past few weeks or so when BTC reached $11k the first time this year.
OK, OK, brainwasher
or ongoing counsel. A little judgment comes handy with any system.
My disclosure.
I have opened a new long - smaller, and higher entry point - after going practically even with my previous, ~2 week trade. Although small, it's making a tidy profit already. I've set two stops so that I pocket half of it if things go south by south-east, and the rest will be closed at break-even if things go true south.
If instead she goes up before going down, I can cash out, call it a day, put away the excess and start over. Alternatively, I can keep the game going by opening a balancing short. If I do, I'll "freeze" a decent level of profit while trying to tweak both legs to scrape/scalp a bit more while exiting. When I'm fed up, scared, tired or whatever, I'll close both legs and a fair part of the frozen profit will get back home if the legs will have been kept fairly balanced.
A pre-set plan with tentative future steps for up/down. Judgment deferred but eventually useful as always.