[Yuna7780]

Myth Busters have proved you can teach an old dog new tricks.

Don't worry. It's hard for English speakers to learn another language sometimes because of its... simplicity!

Don't overthink things and just work hardest on your weaknesses and DON'T study off and on.

Find a different teacher and try to create a proper pace for yourself. Why so many people fail at learning languages is because they don't know how to pace themselves.