What is your answer to those who are struggling to find hope that things will get better?

I don't want to share my problems, and you don't really need to know what they are because, in my experience, despair is pretty commonplace. Needless to say, things are bad for me, and I don't expect them to get better.

How do I have faith that my shepherd's will supply my need when my needs have not been supplied in the past? Why would I expect that God might supply me with joy and happiness after death if I am denied it before death? Why would I suspect that I am valuable to God when I have such little value to humans?

Thank you in advance for your perspective.