The smallest or "millimeter" way to change is simple: make a decision. You can't get on the road to change until you make a decision. It's the smallest way to get moving toward what you want to do. Acting passive is unlikely to get you where you want to go. Yes, sometimes things fall into place, but realize they can't come to you unless you invite them. So whatever the change (big or small) needs to start with you and your choices. Are you going to continue what you're doing and "hope" something changes or are you going to decide to make things happen. You'll find the very act of "deciding" can immediately shift your perspective and invite the right kinds of things to come into your life. Whether it's subconscious or conscious, once you've decided it's almost like taking off blinders. Have you ever noticed that when you think about something you'll start noticing similar things around you? Making an active decision is the first "millimeter" step in the right direction. So make a decision!