Even when you are working within a team you want to find some ways to make sure that you are indeed working to your strengths. One of the best ways to ensure this is to work to make those things that you have identified as being your positives, into making them . Most people will alternate between playing to their positives and playing to their negatives and the best way to stop this cycle it to make playing to your positives second nature.
Knowing how to work to your strengths really is something that you need to find in your own way, but coming up a list of what those strengths are will always come in handy. Update the list as you go along, when your strengths or weaknesses change you should make sure your "inventory" is up to date.