If you can’t get a new role or don’t want to take the risk, find a way of dealing with new situations even in your current role. Try and solve the more complex issues that you have been skirting so far. Try and volunteer for special projects in a different field in your company even if there is no career benefit. And when you get nominated to such project teams, go out of your way to make a difference and contribute; don’t stay within your comfort level.