There is so much that affects how we feel. Hormones, sleep, health, experiences with other people, sunlight, and more all play a part in how we feel. We can wake up happy as a clam, and then one bad experience can turn our mood around for an entire day!
Sometimes we are certain God loves us, and other times we doubt that love. Sometimes we feel like praising the Lord, and sometimes we just want to complain. How we feel about God, or even how we think God feels about us is not an indicator of our faith. Feelings aren't an indicator of God's work in our lives either. He keeps His promises and does not fail us.
Faith is believing in His promises even when we can't see our way through the storm. It's praising Him even when we are weary from being tossed around in the stormy seas of this life. Faith is consistently looking to Him for guidance and help. It's giving thanks in all things even when we have had profound disappointment.
There are many things that can influence our emotions and how we react to something, but God doesn't change. He remains the same. And, aren't you thankful for that? Aren't you thankful He doesn't change in His love towards us like we do to Him and other people in our life? He is the same yesterday, today, and tomorrow. That is another reason to praise and worship His name.
Psalm 34:1-3 I will bless the Lord at all times; his praise shall continually be in my mouth. My soul makes its boast in the Lord; let the humble hear and be glad. Oh, magnify the Lord with me, and let us exalt his name together.