Nurses of Roozbeh Hospital will enter the study through available sampling. Then they would randomly be divided into intervention and control groups using the blocking method. This would be The block randomization method, for example, the researcher considers the intervention group as A and the control group as B. The extent of each block of 4 is stable so in each block, there are two A (intervention) and two B (control), in this case, 6 situations are created, including the first mode (AABB), the second mode (ABAB), the third mode (ABBA), the fourth state (BABA), the fifth state (BBAA) and the sixth state (BAAB). We will roll a dice and for example, number 4 shows up, we would roll the (BABA) state again, for example, number 5 shows up (BBAA), and ... We will repeat rolling the dice until the sample is complete. To hide random allocation, blurred sealed envelopes with the letters inside will be used.