Re-evaluating the research

NOTE: I know the word Research is in the subject, but this not so much a research comment as a comment on genealogy in general.
I have had the time and opportunity to view/review some films at the local FHC the past few weeks, and as I extracted information and tried to analyze it, realizing that a lot of it may or may not be for my family members, I also realized that I needed to look at old pieces of information from years ago.
So I was looking (again) at information extracted from the 1920 US Census, the first census on which any of my family (the ones from Zacatecas) would have appeared. I am having 2nd thoughts about family groups that I thought were related, as my recollections of family members is mostly confined to my nuclear family - I knew and recalled very few of my father's 1st cousins (primos-hermanos), and therefore can't trace those families forward in order to find someone to ask family questions. Add to that the fact that so many people have the same name - trying to sort them out is a nightmare. Alas, my father (the family elder) died the year before the 1920 census was released, and though he imparted a great deal of information in the form of names, I am frequently unsure if I have the right individual/family.

Well - enough of my pity party - I hope your research is going more smoothly.
BTW, these are the films I am currently reviewing and from which I am extracting information regarding the following family surnames.
SURNAMES: CASTRO, DUENAS, GARCIA (Direct Line; trying to stay focused on these for the time being).
FILMS: # 1164727 - Valparaiso: Reg. Parroquiales - Bautismos, 1868-1870
# 1164741 - Valparaiso: Reg. Parroquiales - Inform. Matrimonial, 1878-1892
# 0604817 - Sombrerete: Reg. Parroquiales - Bautismos, 1863-1869
# 0654983 - Sombrerete: Reg. Parroquiales - Matrimonios, 1793 1854

Have a great weekend - don't forget to change those clocks!!

Natalie in VA