[quote="Paul_theApostle, post:4, topic:323416"]
It happened a while ago,i was in a waiting area yet to be called and i got up and walked around and saw on an empty seat a packet of smokes,no one was next to them so i took them and sat back down where i was at the front.
a bit later a boy came around searching the seats looking for something and i knew it was the smokes,i didnt have any smokes that day and no money to buy any so they were a good find for me to have smokes for a while,
i did think of giving them back to him or handing them in,but when he came back the second time i thought i would look like a thief giving them back to him
i was desperate for the smokes and kept saying to myself bad luck ,i found them there unattended and at that moment they belonged to nobody and anyone else wouldve taken them as well and that its his bad luck for being stupid enough to leave them behind
anyway i did feel bad for not giving them back and will confess it next time also
As others have said....you need to ask yourself how you would feel if you were the one looking for your lost smokes.
While this may sound judgmental...I have to say that in this case, your addiction to smoking has turned you into a thief.
Given what you describe above I would lean towards classing this a mortal sin.
That matter might not seem "grave" on the face of it...but the fact that the owner came back twice indicates the importance the owner placed on the object.
You are not clear if, when you first picked them up, you honestly believed they were abandoned or not.
Assuming you did honestly believe them to be abandoned then you did not steal when you first picked them up.
However, when the owner returned twice looking for them you knew that your initial belief was wrong. They had not been abandoned. Your failure to return them to their rightful owner. Changes the matter and culpability is incurred.
At this point the three requirements for Mortal sin are satisfied.
Grave matter....The importance of the object to the owner (seen by his returning twice) gives it greater weight than simply the value of the cigarettes.
Knowledge...you know that stealing is a sin and in itself a grave matter.
Consent...You saw him return twice and deliberately kept the cigarettes.
Now - I will say that your addiction to smoking may act as a mitigating factor, clouding your judgement...but it remains a serious sin.
I'm sorry if the above sounds harsh...but you asked our opinion....
I strongly suggest you take this to your confessor.