How to focus on study/work when we are anxious?

It's almost impossible to focus when you're anxious, so I'd say that your first priority should be taking care of the anxiety. Take a half hour to take care of yourself. Do things that relax you and make you feel calmer, and make sure that you continue to keep yourself calm and relaxed while you're working by taking breaks and taking good care of yourself during them. You'll be much more productive in the long run if you take the time to deal with your anxiety instead of trying to push through it!

When i am anxious yet need to study or be fully present at work, i try to work in short intervals, i will work hard for half an hour then give myself 5 minutes for my mind to wander, minfulness training i feel helps with this, as when it is mind wandering time you have some control on it and have the ability to bring yourself back to present and back to study / work. if you can be fully present in your work or study, your mind wont wander to much. i also find very low calming music to help stay focussed. anything too upbeat is only going to stir your anxiety and also watch out for what lyrics are being put out to you.

I'd be very careful doing that and consider what you're anxious about and how long you are anxious already or whether it's a recurring thing in your life. Your mental well-being is more important than your study, focus on that, see what you can do about your anxiety. If you really must focus on study/work it might help to first write everything out that you're anxious about before going to study/work.

The most important thing is just to start to study. It doesn't matter if you think you'll stop soon, or not do a good job, you only need to start, with no pressure

If you want to study when you’re anxious, my suggestion Is to grab some relaxing comfort foods and snack on those while watching something funny for 15 minutes. This allows your to have a break from anything that’s bugging you and you’ll be able to study or work a lot better once your nerves are calmed. If you don’t have any time for a break, I also think it’s a good idea to listen to music while studying because it will also allow you to be more at peace and to study easier and more efficiently, which was the main goal.

I like to step outside and take deep breaths looking at nature and trees and trying to think about something positive. I like to vent about my emotions and get them out to feel free again. Whether speaking with a loved one or writing my feelings down in a journal, any source of venting how I feel helps me tremendously. I also like to find a source of outlet when it comes to getting my mind off of things. To do this, I like to watch comedy movies, garden or create things. Once these thoughts are out of my body, I am able to focus on study/work.

Take a deep breath, count to ten, and then release it slowly. Focus on your breathing. Concentrate on your heartbeat. Little things like that can help you to feel grounded. If all else fails, it's okay to take a short break to relax.

Listening to Classical music or piano music can help you focus also sitting outside (if the weather is okay) as sometimes listening to the outdoor sounds is good for focussing and anxiety.

It depends on what you are anxious about. If it is something controllable and something that can be solved, do it. If not, try thinking that you don't want to spoil your studies because of something else because then you'll be in more trouble.

As you are anxious and are trying to focus on studying and working, there are two options you can either do some work or subject to study on and take breaks in between and when you're ready you can continue from where you last left off and an alternative is finishing everything you need to do and relax the rest of the day.