- Actions speak louder than words
- Preach the gospel always. When necessary, use words
The second saying is often credited to St Francis of Assisi. He never said it. St Francis almost never stopped talking about his faith so it would have been a strange thing for him to say.
In today's world it is hard to talk about your faith. I can see why people chicken out. You do it wrong and you end up feeling more guilty than before. It is awkward for you and awkward for those you are talking too. It is just hard to imagine something good happening.
There is one thing that you can do to try and fix that. You can talk to other Catholics about your faith. That is one thing that the protestant communities I was involved with did a lot and Catholics rarely do. Part of it is there is a wider range of spiritual types in the Catholic church. In a protestant community there is often more uniformity. A Dutch Reformed church is going to have less diversity and therefore you can expect to have more in common with the people you talk to. That makes it easier.
It is easier for protestants but that does not mean Catholics should not do it. We have a diverse church. Sharing our faith even inside the church can make for some challenges in terms of charitably disagreeing. We might have a few bad experiences. Still not talking about our faith at all leaves us in a bad space. If we don't talk about our faith inside the church then what are the chances we talk about it outside the church?
Suppose a non-Christian friend talks to you about something they regret. They feel guilty about something. It would be wonderful if you could talk about forgiveness with them. It would be even better if you could do that without using religious language. If you could speak with your own words from your own heart. Have you ever spoken about forgiveness that way with your Catholic friends? If you have then my guess is you are much more likely to try it with you unchurched friend. It will seem almost natural because your will be responding to your friends need by telling a personal story you have told before.
The key is to learn how to talk about faith like we talk about anything else. Don't force it into conversations but don't block it out either. If we are doing it right it should connect with our lives at many points and mostly in a very positive way. So find a safe Catholic community where you can learn to talk about such matters. Then your will have a fighting chance to talk about it with the secular people in your life.