If one understands and accepts evolution then they realise that in the same way that an apple tree grows apples, the Earth grows humans. And as the apple is the tree, we are the Earth.
Self-love and self-admiration aren’t the same thing.
Aspire to remain at all times aware of as much of the cosmic and universal context from which your experiences flow as you can. For life is richer when when seen for what it is rather than a story we make of it.
Treating negativity negatively leads to more negativity. Instead treat negativity with kindness and you will create goodness.
Don’t let it be a condition that for you to be in a good mood those around you must be also. Be your own source of joy, and maybe even one for others when they need it.