How should I deal with overly competitive co-workers?

Just do your job. Don't compete with them because it just fuels their competitiveness. You just need to remember that you're all working towards the same goal with the company you are with so just ignore them and continue doing your job the best way you know how.

Understand that each person has a personality, some people are very competitive and others no. Don´t let their competitiveness affect your work, your performance. Focus on your goals, not theirs. Try to take the best learning from their behaviour, and understand that being competitive can be something good or bad, it depends how you deal with it.

I prefer not to be competitive as them and step back. Or talk about it. I think things are often resolved with a good honest talk.

Overly competitive co workers can be very hard to deal with if you are not in that space. Sometimes it's a matter of working harder, not smarter for them, because work looks so good. If they are getting in your face, have a short pleasant conversation with them, do not feel imitated by them, and explain you have a different work style, if they have something to say about your way of doing things. Keep the relationship open and lightweight.

maybe talk to them about it. maybe suggest that you could work together to be better together instead of working against each other.

Focus on you not on the ovrely competitive coworkers. They are everywhere. We all have something special to bring to the table. Also, to feel more confident, you can insure your place at the company by bringing in more value.

There are good competition as well as bad competition out there. You get to decide what competition it is. You can use the competition to better yourself and move forward. But if the competition is bringing you down. Then maybe you need to know when to fight that competition and when to not. Pick your battles wisely.