Change happens every moment. Right now things have changed just from the second before. This means all things in life are fleeting. Not changing is like trying to hold on to the present as it becomes the past. Why should we hold on to the past? We should not. Nobody has every succeeded at this and you should not think that you're special enough to think you will be the first.
Change is good. It should not have negative thoughts connected with it. Change will happen whether we like it or not. We might as well learn something new so we can adapt to change in ways that do not cause us suffering. The scariness of change can be counteracted with learning. Learning something will lessen any suffering that occurs from change. In the terms of IT, you'll live a happier IT existence because you will not accumulate massive amounts of "technical debt" by not changing and therfore not learning. Doing things in the "tried and true" methods don't always mean you're doing it right.
So take the plunge and make a nice down payment on the change that inevitably comes. Learn something new every day. Or if you want a different explanation in clearer wording: How can you be in IT if you don't want to learn new stuff? If you don't want to learn, you're in the wrong business.