Lack of trust or faith in the long-term promise of things is insecurity, which creates a host of worries and stress in the present that suck away the contentment of life-giving, joy-filling relationships.
Psalm 40 says
Blessed is the man
who makes the LORD his trust,
who does not look to the proud,
to those who turn aside to false gods.
Many, O LORD my God,
are the wonders you have done.
The things you planned for us
no one can recount to you;
were I to speak and tell of them,
they would be too many to declare.
One's individual purpose and identity in life is found in Christ, and Christ alone. Attempts to fill that critical bond with other earthly relationships will only end in heart ache, tears, or worse.
Psalm 40 continues:
Sacrifice and offering you did not desire,
but my ears you have pierced
burnt offerings and sin offerings
you did not require.
Attempting to walk on eggshells before the Lord is no way to live. Do this deed or perform this action, the Lord doesn't want that quick fix mentality. We're ok with Him because of what He did. Being ok with Him isn't a matter of what I can or cannot do. Christ wants a long-term, heart-convicted mentality of His purposes, ways, and life-giving Truth. In that frame of mind, it's much easier to love Him and others when I accept it's not about me or what I can do.