Growth mindset is hard to achieve. Humans tend to look for comfort and stick with it until something happens. No one really wants to get out of their comfort zones until they are forced by an event or a difficult situation. Rarely have I ever encountered a person who wants to change something and actually do something about it, though it is still possible with the right approach and the right support.
You are now sounding like the "fixed mindset" itself, I advise you to change it. What first caught my attention in what you wrote is the fact that you claimed the "growth mindset" is hard, how? Only a pessimistic person would think in that direction. Whereas, it's the reason why people indeed have the fixed mindset that will not grow because their minds are always discouraged and also discourage others. And if the circle you find yourself is such that is not positive but always discouraging you, I advise you to change it because I simply can't imagine you saying people you know do not do what they want to do or rarely do it, that's preposterous and certainly their fault which has to be totally avoided. In my own circle, I have mostly motivators and not discouragers. I mean those who would even tell you that you can do it when you don't believe in yourself. That's the spirit, and the kind of people that should be in your circle, not some bunch of idiots that will encourage laziness and idiocy like them.
This is a wake-up call for everyone, whether they want to continue to move forward in life or they want to remain stagnant. Mind you, nothing good comes easily, which is why the few efforts demanded from us should be done without procrastination or laziness. We should always be versatile, resilient and positive no matter what. These are the spirits/mindsets that can help us go forward in life.