I am pretty sure that everyone felt like you just described once in their life! I think it is great that you don't really know who you are, cause often there's a reason to be scared and you can't always be happy! I guess a healthy balance between all the feelings is the best way to live a happy life :)
A healthy balance between different emotions is really important to live a well-balanced life because too much happiness can be toxic too. And yes often not knowing who you are makes you do things in ways you never thought you could. Thanks for the meaningful comment :)