¶27 The district court has the discretion to reconsider a prior ruling any time before a final judgment is entered. See Utah R. Civ. P. 54(b) ; see also Hafen v. Scholes , 2014 UT App 208, ¶ 3, 335 P.3d 396 (per curiam); Duran v. Baksh , 2011 UT App 159, ¶ 5, 257 P.3d 458 (per curiam). However, to seek a modification of a divorce decree, a movant must show "a substantial change of circumstances occurring since the entry of the decree and not contemplated in the decree itself."