You are your own biggest obstacle
There is a vacancy in your department for a director position. You are a strong manager with very good track records. The position is not within your current function, but it is still a very interesting one that would come with a promotion.
You are interested in this position, but do not even dare to apply as your profile is only matching 80% of the criteria, not 100%. So, you decide not to apply.
You do apply to the position, knowing that the missing competencies can be learnt on the job. You have confidence that with perseverance and hard work, you can achieve great results.