Full Idea
To will is to be immediately conscious of the activity of one of our inner natural forces.
Gist of Idea
The will is awareness of one of our inner natural forces
Source
Johann Fichte (The Vocation of Man [1800], 1)
Book Reference
Fichte,Johann G.: 'The Vocation of Man', ed/tr. Preuss,Peter [Hackett 1987], p.17
A Reaction
A more Nietzschean view would be that to will is to be conscious of the victor among our inner natural drives. It can't just be awareness of one force, because the will feels conflicts.