It is natural to feel frustrated if you are not confident that you are progressing. Whenever you feel this way, it is important to remind yourself of why you started learning English.
However, don’t rely on an external goal to motivate yourself. Rather, you need to find out why you want to learn English for yourself.
For example, you want to improve your English because of your career. So you can get that promotion you’ve always wanted. You want that promotion so you can get a larger salary and be able to afford your child’s university tuition…