You sometimes hear people say “if I had my life to live over” I’d do this project or that thing differently. It’s an expression of regret and also of an unwillingness to take immediate, drastic action. It is another way of accepting your lot, the way it is.
Depending on your beliefs and convictions, it might be the case that you will never have your life to live over. This could be it. This could be the only one you’ve got. If true, would you really be so complacent about continuing to do whatever it is you are doing, when you know full well that if you had your life to live over, you’d do something different?
Some people say “if I had my life to live over” as a way of saying they think it’s too late to change. Why? When is too late? What age or date on the calendar? Isn’t the real truth that you believe that it’s too late, or too difficult or that you aren’t going to be able to manage the change and transition? Why should any of that be true today, whereas if you had made the change ten, twenty or thirty years (or weeks or days or minutes) ago, the path you should have taken would have been one you were capable of taking at the time? What could possibly have changed for the worse, in all that time that now makes you incapable of switching tracks? I would argue that today, you know more than you ever knew before.
Perhaps they mean they have become so hopelessly committed and entangled, that to do the other thing they wish they had done would require too many ties and relationships to change. What are you? Some kind of martyr, willing to lay your own life down selflessly to avoid everybody else you know having to come to a different accommodation with you? Do you really think those that love you would abandon you because you suddenly went back and learned to programme, instead of remaining a book-keeper that spends all day in Excel? Maybe you lack the confidence in yourself to try. Do you think those that love you lack confidence in you? If they do, do they really love you, or do they love that you are in a convenient situation for them, from their point of view?
The only life you have to live might be the remaining years you still have in front of you. Why would you keep doing what you know you wouldn’t do, if you could have started on a different path earlier? Isn’t every day that you spend on that unsatisfactory path just another day wasted?
Live your life as if there was no possibility of having it again, to live over. You probably only have one life.