YES! it is super time and detail intensive. i did my own DNA and had a girl connect with me as a 3-4 cousin. she was adopted and i was closest connection. i did not know how we were related, but i worked up to our common ancestor, my grandmother and her great grandmother were sisters. my grandmother had five sisters though!, and then worked down each sisters families, who all had 5-6 children each as possible grandparents, and then down to her possible mother. and I found her! it helped that i was able to ask my extended family information even if no one was forthcoming with any information. i eventually got her grandfather, my my grandmother's nephew, who i knew his name but had never met and he confirmed his daughter was the birth mother.