San means born of the heart and kalpa means way of being. Sankalpa is the deepest intention and desire that are born in the heart. In the Upanishads it says: you are your deepest desire.
You may write down your Sankalpa and repeat it every day for 40 days and then look for the change to happen.
«An individual who is established in «being» can harness the power of Sankalpa to bring about the spontaneous fulfillment of any desire.» Deepak Chopra.