We ought to carefully settle on our convictions and then fit our lives to those convictions. We get one life, and only one. Once done, that life cannot be undone. Building a life is serious business. Constructing a character is important work.
Mistakes are disastrous.
Think about the significance and implications of the truth. Act on the basis of the truth. This would involve an equally sober assessment of the cost of non-discipleship. The fact is, it costs very much more to refuse discipleship than to accept it. He deserves nothing less.