When the situation could occur like before bowling or such you could tell a story that concludes with you saying: people who complain only are annoying.
And when your friend ultimately start with his complaining, you can tell him that he complains a lot.
If this does not work, you have to straight up tell him.
PhotonMan123 t1_j6leurc wrote
Reply to LPT Request: How to tell a friend that their negative talk (raging) needs to stop? by swishphish1
When the situation could occur like before bowling or such you could tell a story that concludes with you saying: people who complain only are annoying.
And when your friend ultimately start with his complaining, you can tell him that he complains a lot.
If this does not work, you have to straight up tell him.