I Peter 3:15 Instead, you must worship Christ as Lord of your life. And if you are asked about your Christian hope, always be ready to explain it.
The context surrounding this verse is about suffering for doing what is right before God and how to respond to it. Most of us are pretty good at complaining about our suffering. It is nothing new; the Israelites were masters of it. They were very discontent and often complained to Moses when they had to endure suffering instead of being grateful for what God had provided.
Instead of complaining about what we don't have, we should turn our eyes upon the Lord and thank Him for what we do have. A complaining or dissatisfied heart cannot worship the Lord. Worship is always Christ-centered with gratitude and praise for what He has done and is doing in our lives. Worship is resting in the goodness of God. It is expressing to God our adoration for Him.
We should be quick to share the hope and help we have in Christ and very slow to share about our sufferings or what we don't have that we wish we had. When we have grateful hearts it's easy to talk about it to others. When we appreciate all that the Lord has and is doing, we express it often. People need to hear how good and loving God is towards us. They need a message of hope, not despair.
Feast on the riches of His grace and you will always be ready to explain to others how precious and wonderful the Lord is to you.