Anxiety is like a swamp. The more u fluctuate the more you sink into it. If a person is weak he or she can even end up doing suicide as u said. So one needs to stay away and protect himself/herself from such a disaster. But not everyone can and it changes the life of a person. I from an live example of my friend know how harshly it effects you. It doesn't let you do even things at which you once were best. Now coming to the remedies that i know have really worked are:
1)An empty mind is devils workshop, if you keep yourself indulged in a lot of work you have the best chances of overcoming it.
2)Stop thinking nonsense , if you are capable of doing this, it will be your best shot.
3)start exercising, maybe even go to gym or morning walks. What it will do is that it will refresh you.
4)start a healthy food habits. Say no to junk this really does work trust me.
5)proper sleep is what you want. You can achieve it by doing things which will make you tired. The tired you feel the early you go to bed. Please make sure not to take any sleeping pills. Sleep but sleep naturally.
6)maybe give yourself a break a go to vacations to your favourite places.
7)start keeping yourself happy each and every time. Make your brain think otherwise.
All the above points have worked on my friend. I gave her same advice she followed it and shes getting better and better. Hopefully if anyone faces such a troublesome let this work on him/her.