When I am Wrong...

Today is not a trendy day, after all. I was doing OK this morning, caught the up trend and avoided a fake break at a momo stock. I made the mistake at the afternoon when I saw someone good bought at 1488. I followed, expecting an uptrend day. Didn't want to stop at 1485. Average down at 1483.5, and finally cut all at 1480. Sent back all the gains and much more. Looking back, two mistakes1) believed other than self (this is not the first time. but funny thing is I always make the same mistake again.)2) didn't stop loss in time. Frustrated at the repeated mistakes. Greedy, fear and ego, always in front of me.Still hold AAPL short.