Despite all the illustrated Bible storybooks you grew up with, when you are older you will finally deeply understand that God is not an old man in the sky with gray flowing hair, a beard and a crown, surrounded by harp players. God is not separated from you. God is around you all the time.
You will also learn that God doesn't usually create neon signs to show you the way. Sometimes you will have no idea if you are making the right decision, but the peace in your heart lets you know that God is with you.
Dear Me, do not cling so tightly to your plans for the future. Just learn all you can in the space that you are in, because all those skills will be useful as you jump from career path to career path, finally landing in ministry. Know that no knowledge is wasted; even learning how to fix a jammed copy machine will be useful in ministry. Know that God is with you in each space.
Dear Me, keep going to church. Your church family will continue to grow and support you in ways that your other family cannot. Continue keeping in contact with people you love because as you get older, those relationships will become more valuable.
There will be several detours and bumps in the road. When you are throwing your hands up in the air in frustration, do not forget to look around. Don't forget that God is with you in each space and that you are loved.
Remember to take care of yourself. You are important and loved by God and others.