We have done those deeds, which invite happiness before, but there are also deeds, which are bad, and if you do them, they will lead to unhappiness.

 Allah has made certain deeds wrong either because they are bad for us, i.e. our health, or they hurt or harm other people.

Some of these are listed below:

Not praying on time:

Salaat is one of the most important acts of Worship, performing it is Wajib.

Not praying on time without a good reason; E.g. If you are watching your favourite football match, the FA Cup between Manchester United and Crystal Palace, and it is time for Salaat, you should go to pray first, and then come back to watch the rest of the match. Our 6th   Imam (A) has said:

"Whoever does not pray on time is not of us"

Eating even after you are full

Eating when you are already full is bad because you spoil your appetite, make yourself overweight and put extra pressure on your body to look after the extra weight.

Sleeping more than is required:

Sleeping too much is bad for you because the more you sleep, the more tired you get. This means that you become lazy and lay in bed for longer than you need to.Time is very precious, and Allah has given it to us to spend usefully.  We must try not waste it.

Telling Lies:

To tell lies. Lying is very bad and can become a habit very easily. Lying is also like a key, which opens the door to other bad deeds. Prophet Muhammad (S) has said:  

"Leave falsehood and make speaking the truth a habit"

To be rude to others and also to be stubborn:

Being rude to people is bad because you hurt their feelings. Also, you will lose your self-respect and your friends if you make it a habit to be rude.

Being Stubborn means that you think only you are right and that everyone else is wrong and that you refuse to listen to anyone else. You should listen to others and think about what they are saying before you decide what is right and what is wrong.

To laugh at other people's mistakes:

Laughing at other people's mistakes is rude and also shows you are being proud. Everybody is human and everybody makes mistakes.

To laugh at other people is bad because you can hurt their feelings. Just think, how you would like if other people laughed at you?

Sulking:

Sulking means to make a face when you don't get what you want. This is bad because you are being a spoil sport.

If your parents refuse you something, they are only doing it for your own good.

To think you are better than everyone else:

Thinking that you are better than others, is one of the worst deeds and is called PRIDE.

This is why Shaitan was removed from the Mercy of Allah, because he thought he was better than Prophet Aadam (A)

However good you are, or however well you do, just remember Allah and thank Him and you will stop yourself from becoming proud.

To be in the state of Najasat (unclean):

You should always try and remain clean and Pak. This means that you should wash yourself properly every time you go to the toilet, and make sure that your clothes do not get Najis. If they do, then you should clean them as soon as you come home.

It is said that to be clean and Pak (Tahir) is from the habits of the Prophets.