It is often hard to practice self-control, when eating in the company of other people are greatly in flensed by the following

Peers
Environment
Appearance of food
Hunger

Social pressure: When eating in the company of others, individuals may feel influenced by their peers to eat more or specific types of food. This can make it difficult to practice self-control, as individuals may not want to feel left out or different from their friends.

Environment: The surroundings in which individuals eat can also impact their self-control. For example, being in a social gathering or at a party where there is an abundance of food can make it challenging to resist overeating.

Appearance of food: The visual appeal of food can also affect self-control. When presented with appetizing and visually appealing dishes, individuals may find it harder to resist the temptation to indulge.

Hunger: The level of hunger individuals experience can play a role in their ability to practice self-control. When people are very hungry, they may be more inclined to overeat, regardless of the circumstances or social pressure.