go too far, jump the gun, press your luck

(さきばしり) To jump the gun – to move too fast. To do something prematurely.
(どうをこす) Same as 調子に乗る
調(ちょうしにのる) To press your luck, to carry something too far.
あんまり Used about a thing/situation/extent. Too hot, too far, he studied too much and now he had a breakdown.