Stuttering being linked to confidence/good mental state

Stuttering being linked to confidence/good mental state I've noticed that whenever I manage to keep a positive attitude towards my speech and face speaking situations confidently, I encounter a lot less blocks and the blocks I do encounter I'm able to easily overcome with some sort of speech tool. The opposite is also true: When I'm feeling down on myself and worry about my speech, I tend to have a harder time speaking the way I want. Is this the case for anyone else as well?