That's true, I think speculation will not give anything good and it's different from analysis because in doing that we need to think,
Regarding making a decision, indeed for some people it is not an easy thing and it must be accustomed so that when making decisions we do not hesitate and are afraid.
Think before you act, invest with your knowledge and not just being moved by any market situation, taking things into consideration will allow you to comes up with good decision making, most of the time, if you make an action out of fear or out of something that you don't really think ahead, it ends up losing or ends up doing things in a wrong timing.
Take trading as a business and follow news and do full TA and mostly depend on market index I recommend sell when market too much greedy and always sell in different parts then we get a great benefit
Sell when the market are hyping for sure you will get very decent profits, TA can help you in the manner that you'll be able
to anticipate the next market runs.
It's up your understanding on how to use this tool, it will gives better decision making if you keep practicing using this tool.