An idea, a feeling, a response begin with a ‘trigger event’ and grow ….. spread like cracks in the windscreen. The impact site is small but the cracks which emanate from it are the places of weakness which causes it to shatter.
In reality it doesn’t matter what day you choose to make a resolution for something to be different in your life. Remember though if there is something you want to leave behind replace it with a new behaviour or thought to fill the void it will leave. Be prepared for the conscious effort it might take to make your intended goal to become a reality in your world.