I would not say that I am SKILLED at mending but I know how to do it.
I learned how to sew in high school.
Repairing an item of clothing can make you feel satisfied wearing it and leaves the repairer with a renewed sense of closeness and ownership but it's more than that. When we repair something by hand, our motor skills are honed and our head is fully engaged, leaving a sense of calm and balance. I am afraid that I don't have any tips to offer.