What I understand from you is that you have no clear voice since 7 years, worse before breakfast.
Your voice has changed. In my opinion there has been a chronic change going on with your Laryngeal membrane and hence it needs to be double checked by your Ent Specialist
if there is anything an ENT specialist can do.
Why cant you visit an ENT specialist who would fix this.
I would be happy to hear from you once you did this.
have a good luck.