The first thing is to be yourself and let it be all right to be who you are. Then you can change.
Change takes place into the nothing, into the Unknown. You do not experience the shift itself, you only experience what comes after the shift. You only experience the result of the change. That takes place in a world of space and time, in the world of experience. The change takes place in timelessness and so there is no experience of it. There is no experience of the actual change but only on how you have changed.
Let yourself go into that timelessness, so you can be free and flexible to change anytime it serves you. Anytime it allows you to be more of who you are.
And then trust that whatever it is you become, whatever it is you have changed into on the other side of the change, it is what you need to be at that moment. Accept it, love it. Love who you are. Only by loving who you are now, you can then become anything else. If you invalidate even one moment of your existence, you make it impossible to become the next moment. Because there is only one moment, and what you experience as different moments are the same moment, but only from a different point of view.
You can not escape the moment, there is only one moment. By accepting it completely you allow yourself then to see the same moment from another perspective. But only when you have allowed the perspective you now have to be valid. It is the stepping stone that leads to the next moment. It is the step on the ladder that leads to the next step. And if you do not step on the first one, you do not reach the second one.