Justified mistakes .. How to feel bad while doing the right thing

Is it possible to feel bad by doing the right thing? 
Is it possible to feel good doing what's wrong?  

We know that Alcohol and drugs change feelings to (happier) .. changes characters, from worried, to (it is alright ..  it is good ... it is  OK).

We know Happiness is just a feeling that can change by a pill .. a smoke .. an injection .. etc... we call that fake happiness .. and it is temporary .. 

What about happiness that comes out of changing situations ?? winning lottery .. finding love .. getting PHD .. 
According to studies .. that's the same thing .. it just take longer to wind down.. you are for the most part of your lifetime as happy as you can.. ups and downs are temporary facts.. 

Last weekend (Sep 26th)..O. S..  A very dear person , who disappeared for a while, wanted a video call.. We talked for about 30 min.. then chatted further for the rest of the day .. 

We had little history .. yet .. to me it was very important .. much more than I expected or wanted it to be. 

I didn't want to feel bad .. but I did .. I said what I had to say .. counting odds and numbers made everything I said right .. why do I feel bad .. ? 

The  fact is that she is doing a mistake .. taking big risk on herself and others, feeling good about what's going on .. not knowing the risk or, at least thinking, if it is worth taking .. 

The main problem is : All what is she doing is justified .. very much .. it is what she needs .. what's wrong in getting what you really need (food .. medication .. relationship .. etc.. ) ... 

Well.. as long as you are not hurting anybody .. you should get whatever you need.. and lead your own private life the way to want .. again.. not hurting anybody is the main issue here.. 

But what if there is a chance that you hurt somebody .. or you are going to .. ?
What if this (somebody) is you ?? or somebody you care about ,  even more than yourself (like your child) .. 

Should we consider justified mistakes as non-mistakes ?  I guess not .. here is why.. 

Anything that can go wrong , will eventually go wrong.. said Murphy .. It is just a matter of time.

Wrongdoing (no matter how justified it is) will lead to wrong outcomes ..luck can intervene .. but luck eventually will run out ..just hoping that luck doesn't run out before you die is NOT justified. numbers don't lie .. everybody and everything else does .. 

Feeling good about something doesn't make it right, not all the time at least....

Still ...despite the fact that I didn't feel any wrong .. I didn't feel any good .. at all .. 

Once fucked up there is no way back . there is no "un-fuck", no "fuck-down"..