People are usually tempted to resort to "preaching the gospel" with their lifestyle, thinking "if I am loving and well behaved, people will be drawn to serve my God".
While it is noble and godly to live in holiness, this approach to evangelism is the least effective.
Why?

1) Believers are not the only ones well behaved and loving in the human sense of it.
2) We are not saved by good works.
3) The Gospel is that we are saved by faith in the gracious work of Christ, his death for our sins, burial and resurrection.

To rest the sharing of your faith solely on good behavior is to elevate works above faith in Jesus.
The gospel must be preached.
We can't hide and preach dears.
Open your mouth and preach.
Type that post about Jesus and share widely.