To me, sadhana is a daily spiritual practice allowing time and space for an individual to turn inward.
As Yogi Bhajan (of the Kundalini yoga tradition) says, "Sadhana is self-enrichment. It is not something which is done to please somebody or to gain something. Sadhana is a personal process in which you bring out your best."
Sadhana could be taking a walk in nature, doing breath work or yoga asanas on a mat, spending time meditating or chanting, reading and reflecting on a poem, or simply watching the sun rise.
Please accept this post as a possible starting point for your own practice today.
Conditioning tells us that if we would only berate ourselves enough, blame ourselves enough, and consider ourselves failures enough, we’d accomplish a lot more. In truth, those habits usually leave us exhausted and demoralized. If we were to look at how we accomplish the most, make the most progress in any endeavor, or put out the most sustained effort in seeking change, it’s a very different environment that brings us closer to our aim.