The one who calls you is faithful and he will do it. – 1 Thessalonians 5:24
The promise of God's faithfulness is repeated throughout scripture. The simple fact is that God is faithful.
When He makes a promise, He keeps it. God is faithful to accomplish His Word in your life.
God called you to a new life in Christ. He is working day by day to make you more like Jesus.
What God begins in your life, He completes. If God calls you to a ministry, passion, or position, He is faithful to fulfill that calling in your life.
Sure, you have to work and be a faithful steward and do your part, but God is the one who will bring it to pass.
God never teases you. He doesn't place a call in your life and then refuses to bring it about. No matter what God has called you to, He will be faithful to accomplish it in your life.
God gives you the power, strength, and stamina to complete the call He has placed in your life. The pastor I grew up under, used to say, "God doesn't call the qualified, He qualifies the called.