I'm happier than...

I'm happier than I have ever been, and so...why do I feel like I could cry any minute? Why couldn't the happiness have come around years and years ago? Why did it take so long to find this happiness? Will the happiness last? Will it last long enough? Will it grow old with me? What would I change though? I wouldn't change, because I have wonderful daughters and a husband and family and friends and moments and memories.