Hi there, This shows you are not goal oriented person... And it's normal to be like this at your age except that this kind of attitude should not make you a failure... Now, for concentration in studies you need to learn few techniques how to retain memory of the subject you read... If we work on it, step by step it's possible... Next, ask yourself what you want to be? What's your idea of life? What you want out of your life? Where you want to see yourself next 10 years? Ask few introspective questions to yourself and chalk down all the points.. Then, visit a professional psychologist or psychiatrist and sort out your thoughts, attitude and hopelessness openly and thoroughly... Iam sure any one of us or myself will sit together explore your own self and put  you on track... Don't worry.... Be happy....

Good day Friend.  Lack of concentration or focus is a symptom of anxiety.  If your mind is overwhelmed with anxious thoughts or overthinking about future or career or fear of unknown etc, obviously it will not be  mindfull in  one particular task. Solution for such symptoms is to learn Anxiety Management and learning mindfulness techniques.  I know it's not that easy, but definitely doable if you are willing to make a change in your life. Take a counseling session to assess your symptoms, lifestyle, habits, daily routine etc. Identify the area of improvement and start making small small changes,  your will definitely overcome this problem. Be positive. You will be alright soon.

I appreciate that you are aware about your issue and approaching help from professionals. It's maybe due to many factors. First of all clam yourself and find out at least one goal to complete. I am assuming you need motivation. Take help from YouTube for Some Motivational videos to charge up your day. I also suggest you to consult with psychologist to help you best. You can also contact me through practo app.