You should find someone to talk it out with, maybe a friend or family member and if that doesn't work maybe a speech pathologist! I feel like for me its been the opposite. The older i gotten the less i care if i have a block, It does happen but you just got to push yourself forward cause no one else is gonna care as much as you do. Practice reading out loud to yourself ,even record yourself and see your improvement over time. You got to get out of the mindset that you cant and just start doing.