If someone is unsure whether their prayer (du’a or salah) is being accepted, they can seek reassurance through several spiritual and practical steps:

1. **Trust in Allah’s Mercy**: Islam teaches that Allah is the Most Merciful and Forgiving. The acceptance of prayer isn’t always immediate or in the form we expect, but Allah always listens and responds in ways that are best for us, even if the answer comes later or in a different form.

2. **Consistency in Prayer**: Continue making sincere prayers regularly. The act of consistently turning to Allah with a humble heart is itself a form of devotion, and it helps foster a sense of trust in Allah’s plan for you.

3. **Sincerity (Ikhlas)**: Ensure that the prayer is made with sincerity, free of distractions, and with the intention of seeking closeness to Allah. The quality of the prayer, more than its quantity, matters to Allah.

4. **Make Du’a for Acceptance**: Ask Allah to accept your prayers and make your heart at peace with His will. It’s common to feel uncertain, but asking Allah to grant you faith and tranquility regarding His answers is itself a form of trust.

5. **Reflect on the Importance of Patience**: Sometimes, the response to a prayer might be delayed for wisdom that may not be immediately apparent. Patience is encouraged in Islam, and trusting in Allah’s timing is part of surrendering to His will.

6. **Look for Signs**: Some signs that a prayer is being accepted can be found in the changes you experience in your life. This might include ease in your affairs, a feeling of calm, or other positive outcomes, even if they aren’t exactly what you asked for.

7. **Check for Obstacles**: Ensure that there are no factors preventing your prayer from being accepted, such as neglecting the prayer duties (like regular salah), consuming haram (forbidden) substances, or having unresolved conflicts with others. Islam teaches that purity in both physical and spiritual matters can affect the acceptance of prayer.

8. **Consult with a Scholar or Imam**: If you are feeling uncertain or have concerns, speaking to a knowledgeable person like an imam or scholar can offer perspective and guidance. They can provide reassurance and practical advice based on Islamic teachings.

9. **Keep Making Du’a (Supplication)**: The Prophet Muhammad (peace be upon him) said that if a person keeps asking Allah, eventually they will receive what is best for them, either immediately or in the future. Keep making du’a, and remember that persistence is a form of worship.

Ultimately, it’s important to remember that Allah knows what is best for us, and our job is to keep asking with sincerity and trust in His wisdom.