[inp]

First, block all your notifications and display only one window on your screen. Then, try to focus only 20 minutes on only one task. After that, give you a break of 10 minutes, check your email, FB, Twitter, etc. And repeat the process. It takes time, it is not always easy but with perseverance it is possible. When you will be comfortable with 20 minutes of focus, you will can go to 30, etc. Force yourself and you will be very satisfied with the result and it will entice you more.

[dvddgld]

I strongly suggest trying this in earnest before turning to chemical solutions, they ALWAYS come with drawbacks. Concentration and productivity is definitely dependent on habits, skills, and finding what works for you. Also take care of yourself, these problems often come in combination with poor diet and a sedentary lifestyle. It takes time, consult your doctor if you end up requiring chemical assistance.

Best of luck, I hope you're feeling well soon!