Being ready to share your faith with others at any time means having a right heart with God, a gentleness and respect for the other person, keeping in mind the results might come later on, and keeping in God’s will living a godly life.
There are people who are watching you every part of everyday to see how you live and patterning their lives either consciously or unconsciously after yours.
Holy Spirit of God comes in to dwell, so that the beginning of any rationale for Christianity is not found in Philosophy but in the dynamics of the Holy Spirit of God dwelling within a human being.
Pray instead of stiffening up; pray instead of tightening up psychologically; pray instead of getting edgy emotionally and let God handle the situation.