As a seasoned Product Manager, guide me through the best practices for backlog grooming in an Agile environment. Focus on [PRIORITIZATION TECHNIQUES], [USER STORY REFINEMENT], and [STAKEHOLDER COLLABORATION]. Provide actionable steps to ensure the backlog remains [RELEVANT], [WELL-ESTIMATED], and [ALIGNED WITH BUSINESS GOALS]. Include examples of common pitfalls and how to avoid them, such as [SCOPE CREEP] or [VAGUE ACCEPTANCE CRITERIA]. Tailor your advice for a [SAFE] or [SCRUM] framework, depending on the team's needs. Highlight tools like [JIRA] or [TRELLO] that can streamline the process. Keep the tone practical and results-driven, suitable for both new and experienced teams.