Fishing is mostly waiting, and waiting alone by water teaches patience no app can.

Waiting with no way to speed it up is rare now, and it teaches something that cannot be delivered faster. You cannot make a fish arrive, so the only available option is to be present for the interval, and that interval slowly resets what an ordinary amount of waiting feels like. Patience is built by having no alternative.

Find an activity where the waiting cannot be optimised away. Fishing, rising bread, a long walk out and back. Do it without filling the gaps, and notice how much shorter a queue feels the following week.