Everything that happens to you, whether good or bad is vital in making you who you are. You have to experience the bad to appreciate the good.
I believe that yes there is good and bad but there is also silver lining in the bad. Whenever something bad happens, step out for a second and look for the good in it. You will always find something
If you're a good person and you dont apply the LOA properly then yes bad things can and probably will happen. I cant really say for sure if your good with the LOA that bad things will never happen but i believe that it will be significantly less if applied properly