Psalm 62 discusses the fact that the only one we can truly rely on is our Creator. God is the only one that is consistently there for someone in times of doubt, trouble, strife, and loneliness.
The thing is, God is enough! You may have highs and lows with the other people in your life, but if you keep following the commandments of Christ you will be taken care of.
David, the writer of this Psalm, felt oppressed and attacked by those around him – but David kept his hope in God. It is unfair to base your hope in the people around you. It is unfair to you (for they can never live up to what you expect from them) and it is unfair to them (for they are imperfect just as you yourself are imperfect).
You should not expect the people in your life to give you what only God can give you. Only God can give you the ultimate support and love that you need. Humans support and love, but they must do so in an inferior manner to God. God’s love is completely just and unwavering. God’s ego does not get in the way of His love. A bad day at work does not get in the way of His love.
You should not put burdens on people that they cannot bear, and you must not expect them to show the same amount of affection and support every day. Only God can do that. As David so eloquently put it in Psalm 62:
Psa 62:2 He only is my rock and my salvation; he is my defence; I shall not be greatly moved.