This just in: let’s pretend that science has proven that karma is a thing. Your words and actions will influence what happens to you in the future. How (if at all) will you change your ways?
Seriously, do you really and truly need to prove that karma exists in order to consider how your words and actions influence what happens to you in the future?
Every religion that I am aware of provides very much the same advice. Science tells us if there is a cause (words/actions) there is an effect (influence on the future). So you could say that science really has proven that karma is a “thing”. Personally, I prefer to believe in common sense.
Here’s a simple case study: If you have a job, and go to work every day, you will get paid. If you save money, at some point in the future, you will be able to buy whatever it was you were saving for. If you take out a bank loan, and keep up the payments, you can have whatever item you wanted and one day the loan will be paid off. If you don’t pay off the loan, chances are that the item will be repossessed or some other bad thing will happen to you, courtesy of the bank.
Just for the record, I intend to pray at the altar of common sense every day.