We cannot live only for ourselves. A thousand fibers connect us with our fellow men; and among those fibers, as sympathetic threads, our actions run as causes, and they come back to us as effects.
Ask God for the wisdom to recognize that your true happiness here on earth is magnified by allowing others into your life in a meaningful way.
Chapter 4 - Testing the Spirits. Beloved, do not trust every spirit but test the spirits to see whether they belong to God, because many false prophets have gone out into the world. This is how you can know the Spirit of God: every spirit that acknowledges Jesus Christ come in the flesh belongs to God, and every spirit that does not acknowledge Jesus does not belong to God. This is the spirit of the antichrist that, as you heard, is to come, but in fact is already in the world. You belong to God, children, and you have conquered them, for the one who is in you is greater than the one who is in the world. They belong to the world; accordingly, their teaching belongs to the world, and the world listens to them.
1 John 4-7