Neither one doughnut nor one pushup will change your life in any meaningful nor significant way (unless you have a food allergy of some kind, get poisoned or severely injured, or somehow get magically inspired by a given behavior for some reason, etc.). It will, most likely, take a few donuts or pushups in a row–and over an extended period of time–to create a meaningful change in your body-mind and/or life.
Unless blatantly toxic/unhealthy (and best avoided altogether), only beneficial behaviors that are repeated on a regular basis are the ones that you should be mainly concerned about, because it is these behaviors that become routine habits that then have the power to become unconscious patterns that change the scope and shape of your reality.
It is, therefore, recommended that you form healthy and useful habits (of thoughts, words, and actions, ie. Karmas) as opposed to creating misery and destruction (for yourself and others) through consistent behaviors/habits that reflect ignorant, weak, and/or “lower” expressions (of yourself) in the world. Strive to focus on at least one or two “higher” expressions (starting with your Yamas) to master, and work to reduce (and hopefully eliminate) your participation in ignorant and lowly conduct.
While you cannot necessarily control or determine most outcomes in the external world (no matter what any get-rich-quick marketer is trying to sell you so that they can get-rich-quick off of your grasping), you can determine the fate of your spirit (and greatly influence the state of your body-mind) regardless of outside circumstances when you take the right course of action based on your situation.
When you follow a proven system, or a guaranteed series of steps, for getting from point A to point B in any area of life (not just an anecdotal suggestion, or a circumstantial blueprint that does not match your context of existence due to certain unavailable prerequisites), you will see sure results.
Very few things meet the criteria for being universally applicable principles within Maya, however, so it is important that you find out what is True and applicable (while also gaining insight on what is circumstantially applicable to you). And even more important that once you know what these universal Truths (and your unique circumstantial truths) are, that you live by them fully for the best results on your journey.
When you effectively follow a proven path, grounded on higher principles, developing your life around adopting the right thinking, doing, and being…living your life in a way that is True to your unique expression based on the context of your existence, you will surly reap the reward of a maximally fulfilling, and indisputably good (in a way that is meaningful to you), life. When you are aligned in this way, consciously cultivating the qualities that purely express the light of your Spirit, you are destined for True Joy, destined to live a life that reaches its full potential and manifests its higher purpose.
You can get distracted and chase other goals, developing habits (and thus living a life) that gets you elsewhere (some people will even pursue and gain “the world” with land, titles, and extravagant resources that they will simply leave behind after failing to live up to their full inner potential), but, if you are smart (and do not want to live a lie that you are less that pure spirit manifested in human form, capable of doing more than accumulating objects for your body-mind-ego), you will walk a higher and more intelligent path…You will choose and achieve a higher fate.
Yoga-Meditation Lifestyle Wellness 