With Zero commissions, there's no reason to go all in on any stock. People say you should trade robotic, without emotions -- obviously this is true to an extent, but I believe rather than fighting something that's impossible to do, give in to it. With zero commissions, if you're feeling the urge to buy in, and we all know that feeling, that FOMO, take a quarter size position. If it doesn't start to work, you may have done something wrong. But, you're atleast not completely screwed on it. Give it some room, decide if its going to work or if your initial thesis was correct, then add a little more. And if it doesn't do what you thought, you can take an exceptionally smaller loss.
To fight greed, when a big winner is in your hands, take some off the table. Not necessarily half. A quarter -- a third. So in order to fight your emotions while trading, you have to give yourself a little room. That general philosophy on trading unemotionally and robotic is b.s.
Last but not least, ignore these dumb fucks who sit on single stock boards day in and day out. They, without realizing what they're doing, are trying to suck you in into their losing mindset. It's like a cigarette smoker who loves handing out smokes to their nonsmoking friends. Cut them loose.
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