We live in a calculative world and have a calculative mind, and in such a world, ego dominates.
Pure love makes you feel as light as a flower. You won't feel any heaviness or burden. Ego creates the burden.
Nobody likes to let go of the ego- it is so precious to everyone. However, once you have attained a state of egolessness, the world won't disappear, as you may think it will. The world will continue, but a change takes place within you. Something is uncovered. You start seeing everything with the wonder and innocence of a child.
Look at the optimism of Nature. Nothing can stop it. Only the ego makes humans pessimistic, and this causes suffering.
Happiness is within everyone, but we are not able to experience it because of our ego's likes and dislikes.