You feel responsible for the project, that's normal and i would definitely pick you as a colleague. But you have to let go some of this responsibility; start being responsible for the delivery of the project and the internal goals, leave the technical work to the team. Instead of assigning tasks to yourself, assign them to your team members. Start with low priority tasks and move forward. If the team is competitive and the project is good, they will shine and you will feel better that you have guided them. It's definitely not a walk in the park, and at least you will fulfil your role as a team lead.