For all the negative things we have to say to ourselves, God has a positive answer for it:
You say: It's impossible
God says: All things are possible (Luke 18:27)
You say: I'm too tired
God says: I will give you rest (Matthew 11:28-30)
You say: Nobody really loves me
God says: I love you (John 3:16 & John 13:34)
You say: I can't go on
God says: My grace is sufficient (II Corinthians 12:9 and Psalm 91:15)
You say: I can't figure things out
God says: I will direct your steps (Proverbs 3:5-6)
You say: I can't do it
God says: You can do all things (Philippians 4:13)
You say: I'm not able
God says: I am able (II Corinthians 9:8)
You say: It's not worth it
God says: It will be worth it (Romans 8:28)
You say: I can't forgive myself
God says: I FORGIVE YOU (I John 1:9 & Romans 8:1)
You say: I can't manage
God says: I will supply all your needs (Philippians 4:19)
You say: I'm afraid
God says: I have not given you a spirit of fear (II Timothy 1:7)
You say: I'm always worried and frustrated
God says: Cast all your cares on ME (I Peter 5:7)
You say: I don't have enough faith
God says: I've given everyone a measure of faith (Romans 12:3)
You say: I'm not smart enough
God says: I give you wisdom (I Corinthians 1:30)
You say: I feel all alone
God says: I will never leave you or forsake you (Hebrews 13:5)