The Bible is full of examples of running from God. Jonah is a good one. God told him to go to Nineveh and preach the gospel. He ran. God found him and he ended up in the belly of a whale. The whale vomits him up on the beach. Jonah obeys God. The folks of Nineveh repent! It doesn't pay to run from God.
Moses ran from God by believing he was unworthy and unqualified to do God's will in bringing deliverance to Israel from Pharaoh and Egypt. But Moses could not run from God's will. God used him mightily in bringing deliverance to the nation of Israel.
Gideon was the same way. When an angel appeared to him (as he was hiding from the Midianites in a wine-press), the first thing he said to him was "The Lord is with you, O valiant warrior." I'm sure Gideon looked around to see if there was anyone else in the room (wine-press). Gideon ran from the Lord by making excuses about his youth, inexperience, and even his lineage. God called him a "valiant warrior". Remember...what God calls you is what you are. He sees you as what he has made you (or making you), and calls you what you really are. God doesn't lie!
When we say things like, "I'm not qualified", or I'm not good enough", or "God won't use me", we are calling God a liar! It's God's responsibility not only to call you, but also to anoint you and appoint you.
The key in these Scriptural examples is the fact that God was with them. God stated it clearly to Gideon, "The Lord is with you..." God said to Moses and the children of Israel time and again, "My presence shall go with you." Again, that's the key, God with us!
No matter the call, no matter the task, God is with you! That is what makes it possible. That's why you should stop running and surrender to Him. He is with you! The things that have happened in the past do not change who you are, and what God has made of you. You are a valiant warrior!
So...return to the call on your life. Press forward into the call on your life. Stay the course of the call on your life. God is with you, O valiant warrior!