People snack whenever they are hungry. This can be in the office while working, or at home watching TV. While this is not a bad eating habit, they often lose track of amount they consume and tend to go for unhealthy comfort food items.
If you observe your own habit of snacking, and those of the people around you, you would realise that many of them (this may include yourself) are not actually that selective when it comes to what they want to consume as snacks.
Feed them chips, and they will have it.
Give them a cookie, and they will take it.
Serve them fresh fruits, and they will eat it.
Convenience is actually what most people prioritise when it comes to having a snack. Nobody wants to walk out to grab a snack when there is already a reasonable alternative right in front of them.
To introduce healthy eating into your lifestyle, simply surround yourself at home and in the office with healthier snacks. These can include fruits, nuts or yogurt.
This way, you can reach out and grab a quick, healthy bite whenever you are hungry instead of indulging in a packet of chips or order in fast-food to satisfy yourself and then suffer post-eating guilt later.