Maintaining relationships with depression and anxiety

I have been struggling with despair and anxiety nearly everyday for the last year. I don't know how to maintain relationships anymore. I don't want to let people know just how low I am all the time. But it doesn't stop. What do I do? I don't want to lose my people but I can't mask all the time. And I'm even more ashamed of being honest and being seen weepy all the time. I'm tired of myself. I'm exhausted by this everyday. And if I'm so exhausted, I must therefore be exhausting to have to put up with. What do I do to maintain relationships with people I love?