29 years old here. I have a severe stutter also and have for as long as I can remember. Take every day for exactly what it is...one day at a time. I highly recommend a few breathing/relaxation apps such as 'Tactical Breather' and 'Breathe2Relax', in addition to a home speech therapy app called 'Stamurai.' It does take time, but you can increase fluency with hard work. ....nothing that we do comes from doing it the easy way. Progress requires work. Good luck!