Nearby faces are affected when moving

Greetings guys.

I started working with Blender quite recent, not to say yesterday, and I found myself in a strange situation: when I want to move either face or edge/vertex (and the whole parts are attached to one model) faces that are close to it also affect my movements. Even when I want to separate one plank from the model, in object mode it is still united and may be dragged freely as before. Maybe I switched on some snap tool? Can’t find the solution


Look on the 3d view header. You have a blue circle icon. This indicates that you have enabled proportional editing. Toggle on/off with shortcut O