How can building relationships with unlikely people, like the elderly, help overcome feelings of loneliness?

How do I participate in therapy with no trust? After a crisis, I need support but am struggling to trust a new therapist enough to be open. I don't trust myself either so I don't know if it's not the right fit or I'm self sabotaging?
How do you maintain your optimism when a sudden change in weather ruins a project you worked on for months?