Before you say not again, Voltaire argues that all our actions are caused. And when there are two competing activities, the dominant idea will take precedence. He writes
The will, therefore, is not a faculty that one can call free. A free will is an expression absolutely void of sense, and what the scholastics have called will of indifference, that is to say willing without cause, is a chimera unworthy of being combated.Free will by Voltaire
He concludes by saying we can only do what we will, but we can not will what we will do.
Schopenhauer in his essay on Freewill wrote
A free will would therefore be one that was not determined by grounds; and since everything determining something else must be a ground ± a real ground, i.e., a cause, in the case of real things ± a free will would be one that was determined by nothing at all. The particular manifestations of such a will (acts of will) would therefore proceed absolutely and quite originally from itself,without being brought about necessarily by antecedent conditions, and thus without being determined by anything according to a rule. In the case of such a concept clear thinking is at an end because the principle of sufficient reason in all its meanings is the essential form of our whole faculty of cognition, yet here it is supposed to be given up. However, we are not left without even a terminus technicus for this concept; it is liberum arbitrium indifferentiae. Moreover, this is the only clearly determined, firm, and settled concept of that which is called freedom of the will. Therefore one cannot depart from it without falling into vague and hazy explanations behind which lurks a hesitant insufficiency, as when one speaks of grounds that do not necessarily bring about their consequents. Every consequence of a ground is necessary, and every necessity is a consequence of a ground. From the assumption of such aliberum arbitrium indifferentiae, the immediate consequence that characterizes this concept itself and is therefore to be stated as its mark is that for a human individual endowed with it, under given external circumstances that are determined quite individually and thoroughly,two diametrically opposed actions are equally possible.ARTHUR SCHOPENHAUER Prize Essay on the Freedom of the Will
May you will what you will in this coming year!
If you have time, I suggest this post. The history of the free will problem