Yes it okay to admit to yourself that you have been afraid at times. You may be afraid of your current living situation or it may be a new school, or even worried and unsure of what may happen in the near future.
You may be coming out of a relationship and afraid of being alone You may even be afraid of failing.
But for whatever the reason, you can overcome being afraid.
All you have to do is call out loud to God and say the following in faith. The Lord will honor his word.
Psalm 16:1-2 (NIV)
1 Keep me safe, O God, for in you I take refuge.
2 I said to the LORD, “You are my Lord; apart from you I have no good thing.”