Kinda disagree with this. Day trading does exist and people who are really enthusiast and confident with their skill might interested to do day trading for profit. Sure it's not for everyone due to high risks but limiting yourself to long term is somewhat similar to holding, although you have to clarify what is "long term" in your opinion.

All the points are really good, but it takes time to actually learn and master those points. This is why people learn from their mistakes to make them stronger in the future, you can't do it in just a day and master it. Just don't be afraid if you lose as long as you can learn to not fall into same hole again.