Being Obsessed for good things in life is good , its not something which you should be afraid of, its good if you are focused on right things.
Life will have many ups and downs , we should only focus on what we are truly passionate for, if hearts is not in there, then it may get difficult to succeed, as any rational person will give up.
As its rightly said, ” if you cannot stop thinking for it, dont stop working for it.”
Wish you a happy life!!