For me, keeping a team spirit high can only be achieved when you believe in the strength of your team. And that is what I do: I strongly believe in my team!
Each individual has his skills, his way of dealing with certain situations. It is important to know these skills and use them in your team in such a way that all of them benefit from it. I am not saying this is easy to do but if you achieve this goal, you are on a good track to create a very strong team that can cope with a lot of issues. You have to make sure that you stick together as one; that is what team spirit is all about.
One thing is true: a team leader is no team leader without a team! And that is something that often is forgotten. So you better pay attention to keep the team spirit high because if you don’t, in the end, there is only one loser: you as a team leader.