This research aims to empirically examine the effectiveness of mindfulness training to improve the fast boat ship crews’ self-control in X company Bali, Indonesia. The experimental subjects in this research were 22, 12 as the experimental group and 10 as the control group. Collection data was done by using likert scale of 26 items with reliability of  0.889. The data processed using Mann-Whitney tests, the average value of the experimental group is (16.50) is higher than the average value of the control group (5.5), This means the average score of self-control boat crews receiving treatment is higher than whose not given treatment. The result of reaserch is Mann-Whitney U  = 0,000, Z = -3,974, p (value) or Asymp Sig < 0.05 which means there are statistically significant is differences beetwen two group.