It encourages more positive thoughts; when you’re having a bad day it’s very easy to quickly vent your frustrations in a text on your phone and ping it over to someone, but when you’ve taken the effort to write a letter chances are you’re doing it as a lovely surprise to someone and so you sit and think about what news you’d like them to know, what story you want to tell to make them laugh.
On the flipside it is quite a therapeutic way of being able to convey your thoughts to someone you trust in the way you’d write in a diary or journal. Loneliness in this time of worldwide isolation has such a significant impact on your mental health that even though the obvious and more convenient option of calling someone on the phone is something that is most definitely done, but a lot of people do find that sometimes it’s easier to be more honest in a letter. If you speak to someone on the phone it’s a continuous two-way thing, natural interruptions from the other person will happen, and from their tone of voice you may think that it’s not the right time to talk about what’s on your mind. With a letter you’re in your own space and can compose your thoughts in the best way for you.