Sometimes it's so hard not to.
But we have to.
But what are we not to forget?
God's promises. What God has given to you. What God has done in your life.
In Psalm 77, Asaph (the man who wrote this Psalm) was feeling pretty down and depressed. Feeling overwhelmed (vs3). Pretty hopeless. But he turns to a different attitude in verse 10. "And I said, This is my infirmity: but I will remember the years of the right of the most High." KJV
He turns from being hopeless to remembering God. Remember God. When you're feeling down, depressed, and alone and it seems that life is falling apart, remember God and His promises. He is always with us. Read the Bible and find what God has done in the past and will do. Read Psalm 77:11-20 "I will remember the works of the LORD: surely I will remember thy wonders of old. I will meditate also of all thy work, and talk of thy doings. Thy way, O Go, is in the sanctuary: who is so great a God as our God? Thou art the God that doest wonders: thou hast declared thy strength among the people..."
As Christians, we should remember what God has given us. He has given us salvation, family, friends, a church, and talents. We are God's children, so we should praise Him and remember. It's good to remember!