The idea that “I am at His disposal and that He does His work, I am just a tool in His hands” is known as “prapatti.” Its derivation is as follows: “Pra”–“pat” + “ktin” = “Prapatti.” A practitioner of “Prapatti” does not consider sorrow as sorrow, joy as joy, but accepts sorrow and joy with equanimity.
The feeling is just the reverse in “viprapatti.” In viprapatti, one feels that it is “I” who does everything – and no one else. As a result of this, one becomes crude.