A final word
It is worth reiterating that committee work is rewarding but challenging. You will win some issues but not all. If consumer representatives can change the culture of committees, which are often technical, into seeing that consumers are critical stakeholders and offer value to the decision making process, then this is a good achievement.
Each change you make as a consumer representative is valuable and will benefit all consumers in the long-term.
Sometimes, your gains may not be obvious until many years later. Acknowledge that you have had a valuable and important role in the big picture of consumer representation.