According to Merriam Webster perseverance is defined as “continued effort to do or achieve something despite difficulties, failure, or opposition : the action or condition or an instance of persevering”. Another definition from the Oxford Dictionaries states that perseverance is “Steadfastness in doing something despite difficulty or delay in achieving success”. Essentially perseverance is needed for something that is difficult and without it you will not achieve success. Now perseverance doesn’t gaurantee success, but without it you are almost certainly gauranteed to fail.
A couple synonyms for persevere are persist and hang on; I would add a dogged determination to see something through, to give it your best effort, and to not give up. Now let me also state that there is a difference between between perseverance and being stupid. One perseveres when pursuing a goal that is attainable, and usually perseverance comes from passion or a deep seeded belief that what you are seeking must be achieved.
We all have lots of great ideas and most of the time we pass on them because we lack the desire to make the long term investment or to persevere. Perseverance can apply to all aspects of our lives, but let’s take physical fitness as an example. If my goal is to run a marathon, and I’m just starting a running regime then one would need one hell of a lot of perseverance to make the investment in training required to achieve this goal. I’m no expert in marathon running, but I know some people who are and they train for many months to get in shape to run the 26+ miles required to complete this race. Apply that level of determination to other activities like strength training where you are using progressive resistance and every workout gets more difficult, or your yoga practice when you crawl out of bed at 5:00 a.m. and get on the mat challenging yourself time and time again.
So you want to be more physically fit, you want to have a better body, more strength, improved aerobic endurance, but are you willing to pay the price? I would guess that we tend to prematurely call it quits when in reality we are so close to achieving our goal and that’s where perseverance comes in. Only you know when you need to persevere and when what you are attempting is not worth the effort.