Answer:
I belong to everyone. Sometimes make you happy, sometimes make you sad. I will never end until the day you do. What am I?
I run up and down the stairs without moving
What goes up and down, but does not move?
You do not want me when you donβt have me, but when you have me you donβt want to lose me.
I bring light to a dark world. In a current I travel and through tunnels I am hurled. Touch me and I'll kill you. What am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.