1. Before taking any step to terminate your 15 years long matrimonial relationship, please keep in mind that Divorce is the 2nd most stressful event in one's life',
2. His habit of being indifferent to you or shouting at you at times may change with the passage of time but once you file a case against him, it will be difficult for you to get back even your present position,
3. So, think several times and if you still decide to take action against him then,
a) Collect evidence of his cruel behaviour against you by audio/video recording,
b) Make sure you shall be able to pull on without the presence of your husband and make arrangements accordingly,
c) After making the said arrangement ask your husband for mutual consent divorce with compensation since you shall have to pull on for rest of your life with your children whose maintenance is his responsibility,
d) If he does not agree then file a Divorce Case on the ground of cruelty being supported by the evidence you have already been adivised above to collect. Your matter will be sent for councelling,
e) If you do not mind little more harsh treatment on him, you can file DV case and ask for maintenance and seperate accomodation for you and your kids,