How do you discipline your child using positive parenting?

With 4 boys here eldest is 13 youngest is 6 plus 1 on its way.. hardest and toughest job is to discipline so when something is wrong i talk to my older boys privately.. what they did wrong explain explain.. that they should not do it again.. to my younger ones i also talk to them pro lets say nde pa din nasunod or ginawa ulit and its really really bad like lying taking stuff without permission.. namamalo na ako sa pwet.. ( please dont hate me) it sounds negative pro for me ang mentality ko i will discipline them now rather than the world discipline them.. papakawalan ko sila hopefully instilling and making sure that they know what is right from wrong.. (for parents who will read this please don’t hate me)