Appears you are going through lot of questioning one self experience. We all get easily upset or negative thinking and feeling when we start putting our self worth in others hands. Colleagues. Workmates. Other family members. Friends. Neighbours. All seem to pull us apart.
Next Steps
Know what you are. Talk to some one to identify your strengths positives and worthiness
Make a priority list. What is really important to you.
Health Tips
These days changing roles is easy particularly job roles. If it is too much switch tracks. Over come the idea that means failure. World opens up.