My Response:

I wouldn’t think of this in terms of whether your higher self doesn’t want you to succeed in this field, look at this as what your dharma, or spiritual path is supporting or not. 

Often we build a case in our mind for what field would ideally be good for us without really listening to our heart and seeing how nature is responding to that decision. 

In your situation, it appears that the universe is not supporting this trading plan. 

You went on to describe a previous job that you did very well at with minimal effort. 

It seems your answer is right there. 

Listen to what the universe is telling you and follow the direction where your life purpose is supported, even if your ego mind hasn’t caught up yet.

Love,

Deepak