Personally, saudade is a feeling you just let yourself feel until you don't feel it anymore. It can bring both positive emotions or negative emotions, but it's always a little bit melancholic. Furthermore, saudade is there to show how living also means to lose something over time, though you will also form new bonds simultaneously, that's how life works. So pay attention to the present and notice some good things about it, because maybe you'll miss it in the future. Lastly, notice how beautiful is saudade and the experience of feeling it.