God knows your weaknesses. He knows your strengths. He knows what you can and cannot handle. How? He made you! He knows you better than anyone. Even yourself. He wouldn't put you in something you couldn't handle. He knows you can. But only through him.
Making a big life change is pretty scary. But, know what's even scarier? Regret. From the previous pinner: Do what God has called you to do, no matter how big or small. Be obedient and He will reward you.