Am i a bad dad?

hey all... dad of 5 here.ill start with a little back story, i was an addict and alcoholic. pretty solid example of everything not to do. i ruled the house with fear, anger, emotional abuse and physical abuse. judge me if you want, its my past i'm not proud of it. i've been a sober member of AA for 3 years now and like to think i have come along way in repairing the damage i've done to my family. i still have many faults and work on them on a daily basis.​my reason for this post.just after a couple opinions on a few parenting practices i have.2 middle kids 10boy and 6girl are pretty defiant and i know that's normal for kids, but i often find myself at my whits end. when i reach this point i usually remove myself and force myself to calm down so i'm not acting in anger. my "punishments" when im being completely ignored/argued with/yelled at consist of: time outs/time ins. offering rewards for doing the right thing. if these fail i usually move to threats of further punishment and tell them if they just do it now it will be alot easier. after a couple rounds of this things escalate to removing of toys, a smack on the open hand, never anywhere else. canceling parties or catch ups with friends. my final straw is bed without dinner. through this process i alway revert back to calm reasoning and sometimes even offer rewards again.​i would like to also say that it is very rare that things get this far. my son has just been sent to bed without dinner and its the first time in months it has happened. i don't know if im feeling guilt or what. if you've gotten this far through my small novel thankyou =) leave any opinions or advice, be as harsh as you need... if im doing damage to my kids it would be good to know. cheers, thanks.- a learning dad via /r/Parenting https://ift.tt/3smpGd8