The four is Uranus, and it is the most unbending of the ten signs. A person under it holds to their position and changes it extremely rarely: an argument, for them, is not an exchange of reasons but a test of strength.
They are reserved, inclined to order and consistency, and they expect a result — in career, in status, something measurable. Unlike the Sun, they are not given respect for nothing but have to win it, and that makes their path more conflict-ridden.
There is a reverse side that is rarely noticed. If their position is accepted and supported, Uranus becomes extremely reliable and attentive towards whoever shared it. What they need is not obedience but agreement — and with the person who has agreed, they will go all the way.