It rarely ever hurts to remind your users what’s in it for them. Form buttons are often the tipping point between your customers deciding to follow through with the process or turning around and bouncing. Your button text should positively reinforce the user’s behavior of completing the form by reminding them, “If you do action (A), you’ll get (B) in return”. Try using specific language in your button copy that reiterates whatever it is they are expecting in return. Example: “Get (B) now”.