Start with the easy tasks and move on to the harder ones.
Literally, pick the softest persimmon to squeeze.
No matter how it's phrased, this is the instinctual habit of most people when facing tasks.
Just like playing a game, one starts by stealthily leveling up, beginning with the novice village BOSS before advancing to the final BOSS.
There's seldom anyone who attempts to bypass all the minor bosses and challenge the final BOSS without proper development, equipment, or level.
Such behavior is akin to seeking death, an overstatement since no one actually does that.
For the Jade Emperor, his ascension to Daoist Lord and seizure of the Great Law Decree Technique, coupled with forming an alliance with Great Emperor Ziwei to his side, have torn a gap in the numerous shackles restraining him, opening up a new situation. It is a good start.
However, this is merely a good start, and it doesn't mean that he has reached his peak state and can now do as he pleases without inhibition.