Sell the bag. Keep one body and one lens. Use them for everything for twelve months.

This is the most radical constraint and the most effective. When there is no choice to make — which camera, which lens, which bag — all the cognitive energy goes into the picture. Photographers who own a lot of gear tend to spend a lot of time thinking about gear. Photographers who own one camera tend to spend that time looking.

The second thing that happens: you develop an intimate understanding of a single focal length. At month twelve you will know what 35mm sees in a way that no amount of technical reading could teach you.

The third thing: your pictures develop a coherence they probably don't have now. Because every image is made with the same tool, they start to look like they belong together.

Watch for: the urge to buy something. Note it. Don't act on it.

The point: limitation is not deprivation. Most photographers already own everything they need.