With a closed mind I also might be narrow minded and in need for support. Without the inner contact with myself, the support often comes in terms of blaming others. To feel good I then think I always have to have others to disguise or neglect.
An open mind makes it more likely to open my heart for myself, and then others. If I want to see a change in others, I’d better change myself first. It will immedeately change my world view, and migt even change others by example!