Learn Spanish (Latin America): Anhelamos abandonar ese vicio.

Anhelar is a verb of strong desire. When the subject of the desire and the action are the exact same (we are yearning and we are abandoning), you use the infinitive. If you were yearning for someone else to do it, you would need que plus the subjunctive, like Anhelamos que abandones ese vicio (We yearn for you to abandon that bad habit).

Is anhelar common, and how is it different from querer?

Anhelar is slightly more formal and much stronger than querer (to want) or desear (to desire). It translates best to yearn or long for. You use it for deep, emotional desires rather than everyday wants.

Does vicio only mean a severe vice like drugs or gambling?

Not necessarily! While it can mean a serious vice, vicio is very commonly used in everyday Spanish to describe any bad habit, like biting your nails, drinking too much coffee, or complaining too much.

Why is it ese vicio instead of eso vicio?

Ese is the masculine singular word for that when it describes a specific masculine noun like vicio. Learners often mix it up with eso, but eso is a neuter pronoun used only when you are not naming a specific noun (for example: Anhelamos abandonar eso meaning We yearn to abandon that).