Being a pitcher is a year-round commitment. As you know the learning curve is steep! If you want to contribute to your team and see playing time, your best bet is to practice multiple times a week, get professional instruction, and take planned breaks (not breaks where you don't quite "feel like it today").
Unlike a shortstop or a left fielder, you hold the ball every single play in the game. You have the power to strike everyone out or walk everyone. You have the power to affect the attitude of the rest or your team, whether you stay positive after an error or lose faith when a run scores.
You hold the most power in your hands and with this "power comes great responsibility." - to quote my favorite comic book hero, Batman.
Make the time to practice year-round and you might save the day, too!