It is easy to be cheerful when there is everything to be cheerful about, but not so easy when the earth is shrouded in darkness--at these times your test comes. It is easy to be kind when everyone is kind, easy to be loving when others are loving. But in this there is little credit. The wise soul knows the light is shining in the heavens even when the shadows are dense. Thus when you raise your consciousness above the clouds, you will know that the Sun is shining and that the life of Christ is the only enduring life.
White Eagle. 1998. The Quiet Mind. pp. 71-72.
It is true that we can be nice to others when we are happy with ourselves, our relationships, jobs, opportunities, and/or recognition from others. So it is usually advised that the first thing to do is to focus on ourselves and to take good care of ourselves to become happy. This is too true and is very easy to do.
However, as your soul gains experiences and grows older, the higher goal you set in order to reach an even higher stage of soul's growth.
This message is for such souls who aspire to grow more than ever in this lifetime.