Why is it so hard for this baby to sleep!!!! 6 months of "naps" and now it's getting worse! OMG! I…

Why is it so hard for this baby to sleep!!!! 6 months of "naps" and now it's getting worse! OMG! I have tried everything I have read and people have told me to do! Strict sleep schedule, no cry approach, cry it out (a little I can stand to hear her cry), relaxed let her sleep when she wants, I give up!!!!