is the most Christian thing I've done so far

While evangelism is indedd absolutely important, and we must never deny Christ, I would say you have plenty of opportunities to do very Christian things that do not require outward evangelism.

What good is it, my brothers and sisters, if someone claims to have faith but has no deeds? Can such faith save them? Suppose a brother or a sister is without clothes and daily food. If one of you says to them, “Go in peace; keep warm and well fed,” but does nothing about their physical needs, what good is it? In the same way, faith by itself, if it is not accompanied by action, is dead. But someone will say, “You have faith; I have deeds.” Show me your faith without deeds, and I will show you my faith by my deeds. You believe that there is one God. Good! Even the demons believe that-and shudder.

• James 2:14-19

We are absolutely not saved by our acts, but the rather by grace alone. However, the flip side to this is that we act like Christians when we live by the principals our Lord and savior taught us to live by. Love one another with all our hearts. Forgive our enemies. Turn the other cheek when struck. Do not covet things we do not have or even the things we do have. And most of all, believe in the Resurrection and that Jesus is the living Son of the Father.

Do these things, and you will be doing very Christian things. Bless you and your walk with Christ. You are so very important to Him, and he loves you very much!