Dreams about trying to reach a destination, like swim practice, often symbolize personal goals or aspirations that feel out of reach. The difficulty you experienced in getting there may reflect feelings of frustration or obstacles in your waking life. The presence of the girl trying to seduce you could represent distractions or temptations that might be diverting your focus from your goals.

Forgetting your swimsuit could indicate feelings of vulnerability or unpreparedness in a situation that requires you to be confident and ready. It might suggest that you feel exposed in some area of your life or that you are not fully equipped to handle certain challenges.

Overall, this dream could be urging you to consider what might be holding you back from your objectives and to evaluate any distractions you may need to manage in order to move forward. Reflect on what aspects of your life need more attention or preparation.