The boxer, Mohammed Ali, once said: “A person who behaves at 50 years old, exactly as he did at 20, would have lost 30 years of his life!” He was trying to illustrate that we have to change to progress our lives, both physically and mentally. But how we deal with change is probably what your question refers to: whether we tend to accept it naturally, or resist it. Hence there are basically two kinds of change: the voluntary change that operates internally, and controls our choices, and the involuntary one that is external to us, affecting our action and lifestyle eventually, regardless of our resistance to it.
Voluntary changes tend to be subtle, and are often accepted because they reflect the choices we make. They are seldom dramatic, because we value security in life, being predictable in our actions, and feeling safe in our choices. Where we have the power to change, it will be gradual according to the benefits we perceive we will get from it, and the extent to which we believe our lives will alter because of it. We tend to feel more in charge of such changes which we can control to suit ourselves.
Involuntary changes are quite different. They are the ones that happen whether we like it or not, like the development of technology etc. If we do not feel comfortable with such changes we will resist them as much as possible, but as those changes tend to be inevitable, we have to accept them in the end, even if we only accept certain aspects of them. In the meantime we will find fault with the change, noticing only the perceived negatives to justify our resistance to it, until it’s success elsewhere through social acceptance makes us look foolish and we gradually acquiesce.
We are all capable of change, if we really want it. But it won’t come without great effort because change is the thing we fear most. We genuinely believe we lose the old us, like favourite suits we have grown accustomed to, or lose the old ways of doing things, which make us feel comfortable. But, fear of losing our old selves is groundless. Only thoughts and actions change, not people (personalities tend to be permanent), and each of us has power over what we think and do. We do change, yes, but only in small, imperceptible shifts which then amount to a whole new experience when viewed over a longer period of time – rather like still frames on a film which become animated when they are run together.
Altogether, we naturally change over time, but as we get older, we tend to become more conservative, afraid of any change that we think might make us feel insecure and anxious, which then makes us appear rigid and set in our ways. However, the bottom line is that we will always change, no matter the innovation, the personal readiness depending mainly on the perceived cost or benefit involved.