Discouragement verses Joy

I was a little discouraged on my journey to his heart today, both on the adoption/orphan side and the missions side.  I went to Biblegateway. com and typed in ministry and discouragement.  I was wanting scripture but nothing came up in the search but it jumped to gospel.com and gave me this quote from Ron Hutchcraft ministries. 

"Every time God does something good in your life, the devil is there with cheap shot he wants to use to rob you of the joy of what God has done. Don't fall for it. It's like you've just won the Super Bowl, you're walking off the field, and your defeated opponent says, ' I'll make you pay for this.' And he gives you a bloody nose. Yeah, he hurt you a little, but he can't change the outcome.  You still won, and nothing he can do can change the victory." 

I do not know what this guys theological background is, or if I would agree with him on any other subject, but today he encouraged my heart and spoke truth.  God is moving in both areas of my life and victories are happening.  I am not letting the devil rob my joy.  Praise God for his heart and all the ways He is working without me even knowing it.