Firstly, never afraid of any steps or never demotivate because if the onecs time you lose hope so you cant success or achieve your goals always do work hard never disappoint and always study in small chunk because if you study continuously so you get tired easily.
sometimes we can't focus on studies, for this you can watch some motivational videos it's very helpful, it's my own experience, whenever I lose my confidence, on that time I watch a motivational video and take a proper diet also otherwise you feel week or unhealthy.