Desire is the pull toward something we do not yet have: a purchase, a title, a pleasure, a person. It gives energy to plans and dreams, so it is not simply bad. The trouble comes when wanting turns into craving, when satisfaction never lasts and the next goal arrives before the last one is enjoyed. Then desire runs the mind instead of serving it.
The Gita is direct about this. Gita 3.37 calls desire, which becomes anger when blocked, the chief enemy of wellbeing and wisdom. Gita 5.22 says pleasures born of sense contact are temporary and lead to dissatisfaction, and Gita 16.21 names lust, anger and greed as three gates that ruin the self. Gita 5.23 and 5.28 praise those who can withstand the urges of desire and anger and move toward inner freedom.
The Gita also points to a better source of joy. Gita 6.20 describes a tranquil mind finding lasting fulfilment in the Self, and Gita 2.55 says steady wisdom means being content within, free from longing. Notice when craving or frustration rises and pause before acting. Choose which of the three, desire, anger or greed, misleads you most, and set one concrete habit against it. If cravings feel compulsive, please speak with a doctor or counsellor.