Just tell yourself, you need only
1. One drycabinet of camera
2. One luggage of lenses
3. One studio worth of flash
4. One super computer
5. One box of pen
6. One to two cabinet pair of shoes
7. One to three wardrobe of pants
8. One to four wardrobe of shirts
9. One to five ....
KISS - Keep It Sweet and Simple. You realise that you don't need so much.