I am PURPOSED to share the Gospel.
I am INDEBTED to ALL to share the Gospel.
I am READY to share the Gospel.
I am UNASHAMED of the Gospel.

This is based off of Romans 1:13-16. Professor Yates from Faith Bible Institute broke that scripture down into these 4 statements. This stuck with me as it sums up the attitude all followers of Christ should have. And we do this with LOVE & HUMILITY.

By this all will know that you are My disciples, if you have love for one another.  
John 13:35

Let nothing be done through selfish ambition or conceit, but in lowliness of mind let each esteem other better than himself.  
Philippians 2:3

But you shall receive power when they Holy Spirit has come upon you; and you shall be witnesses to Me in Jerusalem, and in all Judea and Samaria, and to the end of the earth.  
Acts 1:8