Corresponding with a dear friend the other day, I realized that I use a kind of built-in discernment tool when I'm trying to determine whether a leading is coming from God or from me.
When there's something going on--maybe something that I'm praying for that I really want to happen--and I get that sense of peace about it, I feel that I've "turned the battle" over to God and it's out of my hands. But to really be sure, I check in with how I feel.
If I feel soft and open inside, knowing that I'll trust God no matter what happens, I feel like I'm in tune with God.
If I feel hard and rigid inside, thinking, "this just HAS TO happen!," then I usually think I haven't really turned the situation over to God and I'm still clutching to it and hoping I'll get my way, whether that is God's way or not.
For me, God's thoughts bring a strong sense of peace and everything's okay-ness. They always join, share, include, love. The thoughts I have that do not spring from my connection with God are often about worry, control, or my own protection. That seems really significant to me.
Luckily God will bring those hurting thoughts back to the whole, sooner or later, when I realize what's happening and really turn the issue over once and for all.