Loosing sleep means at the least you are concerned about your future.
I don't believe people today understand what is meant by trust. Most people do not get a chance to grow relationships that instill trust. Team tools, or what I call forced trust does not help build a relationship. they create more anxiety by assigning tasks to human(s) who may or may not have the skills to perform them.
These same folks in meeting are now afraid to ask questions in meetings for fear others will see their limited skill/knowledge. As a former Military instructor, I found it necessary to bleed the group for the individual that will speak out . What is neat about that is once we find that one or two people that were coerced into drop there guard others will follow. Break the ice we say.

There is no substitute for an aggressive facilitator, project leadership is not the time for passive behavior from management. People need goals , and until they are capable of creating their own. letting them feel like they have a part of something can only build character. When they start winning and yes it is a competition, only then will you have buy it to the actions.
Every action from a leadership point of view should be a process in growing character in the individual. Very little ever gets done by agreeing that a group will solve an issue. Issues assigned to a person who then builds a team and then breaks down the task to solvable smaller issues.
Do people fail? Yes, That is called a learning experience.
Who do I trust ? Nobody. Your friends will screw you first and family will screw you the worst. Hold people accountable that does not mean fire them. everything is a learning opportunity. Then go get a drink after work.
Learn to socialize without electronics or political events.
Most important without exception, find a Hobby, something you can discuss with other then work. build a life. Remember your job is what you do not who you are, A job is a place to get $$ so you can enjoy life and not live in terror at 4 a.m. And yes you need one.