Jessie J on performing at social awareness events

The speaker discusses a pivotal career decision to decline a significant contract in favor of a life campaign. They recount their involvement in a campaign against crimes and knives, which has been a personal cause since they were 15. The speaker emphasizes the importance of using their voice to promote unity and togetherness.

At what age did the speaker start getting involved in campaigns?

What is the significance of the phrase 'close to my heart' in the context of the speaker's advocacy?