It is important is to understand that surrender is a dynamic process and not a passive tamasic attitude wherein we refuse any effort and leave everything in the hands of the Divine.
There is a supreme science through which we can cut through these innumerable possibilities and arrive at the needed mastery. It is to find the Divine everywhere and in everything.
The significance of Sraddha, Suddhi Kriyas and many other such rituals were rooted in a kind of occult knowledge about the hidden forces that work from behind and influence our lives.