I Peter 2:10 says that for let him who wants to enjoy life and see good days keep his tongue free from evil and his lips from guile.
This verse tells us that enjoying life and seeing good days, and having a positive mind and mouth, are linked together. No matter how negative you are or how long you have been that way, I know you can change because I did.
According to Joyce Meyer, she is a great inspiration to me. It took her time but it was worth it because of the heaping helpings of the Holy Spirit.
It will be worth it to you too, whatever happens, trust in the Lord and be positive.
N:B: According to the Scriptures, God chooses weak and foolish things to confound the wise. (I Corinthians 1:27)