You're not ready to get married yet. You need to prepare to begin a business. You want to move to a new place later. You need more time. You need to prepare to grow. Because of this, it will help you succeed. Do it before you're ready.
For something to grow, it must make you feel unfit and unsure. It wouldn't be growing if it was warm and accessible. It would make sense. It would be the norm. It would be who you are now.
There is never a good moment to do something that causes you discomfort. That holds true whether you're getting married, having your first kid, changing careers, or attempting to achieve any other difficult objective. That doesn't mean you can be irresponsible and not think things through, but you have to embrace uncertainty at some point since it's the only way to progress.
You can't be ready to grow naturally. That's the reason for growth. You can only throw yourself into it with all your might.