De-cluttering decisions:: I might need them in future.

How do you suggest making decluttering decisions for things that I love but I haven’t used for a long time. I find myself telling me that I will get to them in future. I will start these projects in future and I will need them. I will do art projects with my son and I will need them. I will lose the weight and I will need clothes. I feel like this is a future based story I keep telling but it hasn’t happened yet and I feel there is more than enough for those times too. Can you please coach me on what’s going on here?