To believe in someone is to put them on a pedestal. From such lofty heights, they can only fall. Do not expect them to solve the problems you alone must face.
It is wrong to expect others to live up to your expectations. If you have standards, it is all well and good. But we should never burden another with making our dreams come true.
Those who care will make things happen. Belief is not necessary, and can be a detriment. Once you no longer live up to what is expected, you will experience a precipitous drop.
People have a hard time separating what they want from what is good. We must take care of our ourselves, but do not expect any praise for it. You have merely done what was required.
Caring for others means your desires are not considered. The selfish paint their face over everything. And to be sure, their only concerns are for themselves.
One can benefit from another's example without fitting that person with a burdensome yoke. Do what you must. And leave others to do what only they can.