Will is affecting, bringing about, one's intent. Intentions are based on thought. Thought is engendered in the mind. A weak mind is susceptible to suggestions. Suggestibility is indicative of an inability to resist 'external' (not necessarily in the physical sense) influences.

The question of free will is meaningful as a dual of the proposition of determinism. I suggest to you :) that you lack clarity of thought and need to work on that.