The best way to increase self-esteem is to understand the meaning of the biblical metaphor about the poor in spirit. The entrance to the Kingdom of heaven is through the eye of a needle. You don't need to fill your Ego with the material world entities.
To love is to admire. Love is delight. Don't be afraid to admire people, it will be a source of your power. Contempt, on the contrary, is a fear that drains your strength. The more people you despise, the weaker you become.
Fulfill the wishes of those you love, and it will bring you happiness. The universe will help those who realize other people's desires. I love (the Idea of being, its laws, and the ideas it gives me to implement), the world as a whole, people, and myself.
Not bringing home work means not bringing home your fear, aggression, megalomania, lust for power, and pride. Pride is all lies and fear, which means illusions. Before you enter the house, leave all your illusions at the door.
Optimism comes from knowledge, experience, and movement. Optimism does not need to be sucked out of your finger. You should just do your job, prepare for the worst and hope for the best. "Do what you must and be what you will» this is a metaphor for optimism.