the VAST majority of humans that lived before you and alongside you went through every pain you did, they realized the world is in some sense, ultimately meaningless, had existential dread, their parents and friends died (or they died themselves), have had major physical and emotional pain, have been lonely, have gone through emotional breakups, have been bullied, have been injured, have considered suicide, and have ultimately felt all alone in this, but we literately all have gone through these things. Equally, we have all experienced the joy of overcoming a challenge, the weight off of our back when we complete a task, the feeling of cold water on a hot day, the feeling of love, sex, passion, the frenzy of excitement, the joyous sound of music, the beauty of art etc. so next time you do go through a tough time, remember someone, everyone has already been there and done that and we are all in it together.