Trust in Jesus Christ as your Savior and also serve him

Incorrect!
You can do nothing to add to the finished work of Christ. By doing so, you are not trusting in Christ alone as your Savior but only as your helper. You cannot go to Heaven that way. You must forget about your good works and commitments as a means of saving yourself, and put your trust ONLY in the Savior - Jesus Christ.

Romans 4:5
But to him that worketh not, but believeth on Him that justifieth the ungodly, his faith is counted for righteousness.