To be honest I struggle with evangelism.
Yet I am reminded by preachers and teachers to not neglect it.
Paul prayed for an open door for his ministry, for the gospel, for the news of God's kingdom to go forth!
Think about it for a moment. Is an open door difficult to go through? When the key is unlocked one does not need to struggle to open a door. One simple walks in as intended. So it is when the Spirit of Almighty God speaks through us as a mouthpiece, beckoning and entreating a man or woman into His kingdom.
When we go through open doors we are not arguing or straining. We are simply extending an invitation. It is an irresistible message of grace tempered with the loving truth.