It Should be Fun
Your online gambling experience should be fun and not feel like hard work. Online casinos and games should be a form of entertainment and even though it is nice to win and you will want to win the experience should still be fun.
If you are not having fun when playing, then it is best to walk away and come back to it another day when you are in a different mindset.
Just remember that online gambling is not your job and you are not playing in order to have money to pay your bills. Online gambling should be fun and an enjoyable experience.