I use to Not find it so difficult to keep shemiras haloshon. I didn't really have much to talk about others. But nowadays, I find it harder to keep because things have changed like a friend that came back into my life. I talk about them to others, but know I shouldn't. The good thing is that maybe now I'll receive more points by guarding my tongue since it's harder.
The Chafetz Chaim mentions that when we speak poorly, we block prayers and blessing. But guarding our tongue helps to bring blessing. Of course, there are times when we need to say something to protect people. For that we learn what to say and how.
Well have a good week