Whatever it is that you are doing with your investments, it is quite likely that someone has done it before you.
Those investors have probably been through the same highs and lows you may now be experiencing.
The key is to find that someone (or those someones) who have done what you are doing and whom you can learn from – their mistakes so as not to repeat them yourself, and their successes so you can model your strategies based on those.
There are many successful investors around who are willing to share their strategies (and some who are not) – you just need to look for them, approach them and respect that whatever time they are able to give you is valuable.