my inconsistent

I once was told that weakness can be turning into invincible strength. I think it's only apply to those who already have mental strength and consistent...but my weakness is lack of consistent :( school half done, hobbies half done, career half done, piano songs half done, love half done (actually didn't even started lol) ...and that's the thing. I wonder how is it like to welcome someone into my life and keep flame of love consistent for the years to come. what if I can't keep up with it and give up bail out :( I guess i'm just thinking too much . I don't know what have gotten into my mind; maybe just a stage of minds where the puzzle of life is breaking down part by part and reconnect them one by one to make a meaning out of it