The first step is Karmayoga, the selfless sacrifice of works, and here the Gita’s insistence is on action. The second is Jnanayoga, the self-realisation and knowledge of the true nature of the self and the world; and here the insistence is on knowledge; but the sacrifice of works continues and the path of Works becomes one with but does not disappear into the path of Knowledge.
Letting go involves being aware of a feeling, letting it come up, staying with it, and letting it run its course without wanting to make it different or do anything about it. It means simply to let the feeling be there and to focus on letting out the energy behind it
The first step is to allow yourself to have the feeling without resisting it, venting it, fearing it, condemning it, or moralizing about it. It means to drop judgment and to see that it is just a feeling.