There are many things that can block your manifesting abilities.
I have been facilitating thousands of clients for many years and the most common blocks I have discovered and vital to clear are:
Blocked Patterns of Struggle, Lack & Limitation.
Limiting Soul Programming
The Mental Blocks & Limitations that keep people in an endless loop of failure.
Self Esteem, Self Judgement and Self Limitation
The good news is that there are many spiritual systems and techniques that effectively deal with all of them.