Why do we have a joyful attitude as we face trials?

Why do we have a joyful attitude as we face trials? 

James 1:12 NKJV

[12] Blessed is the man who endures temptation; for when he has been approved, he will receive the crown of life which the Lord has promised to those who love Him.

Because we love God, and He loves us, and He will not harm us. Why do we have an understanding mind? Because He loves us and has shared His truth with us, and we love Him in return. Why do we have a surrendered will? Because we love Him. 

Where there is love, there is surrender and obedience. Why do we have a believing heart? Because love and faith go together. When you love someone, you trust him, and you do not hesitate to ask him for help.

Love is the spiritual force behind the imperatives James gave us. If we love God, we will have no problem counting, knowing, letting, and asking. But there is another factor involved: 

Love keeps us faithful to the Lord. The double-minded person (James 1:8) is like an unfaithful husband or wife: He wants to love both God and the world.

 James admonished, “Purify your hearts, ye double-minded!” (James 4:8). The Greek word translated “purify” literally means “make chaste.” The picture is that of an unfaithful lover.