Your limitations are only those of your mind!
20 (yes really 20) years ago from memory - I had a number of brick walls - all of my walls related to people who were born mainly before 1837.
Today (little drum role - I have finally cracked the last biggy)!
However, I have cracked all of my brick walls in effect by doing very simple things.
1. Do not assume -
As an example, my Dad always referred to his grandmother as Elizabeth and even though I had had sight of the grave which said Eliza - I believed him. Actually, I could not find here records until I searched for Eliza.
2. Do you have 3 pieces of evidence to confirm a person's identity?
With Eliza as an example:-
I knew where and when she was buried (burial and death cert)
and I knew who she had married (marriage cert)
This alone proved who she actually was.
By choosing to ignore this I had created my own brick wall.
3. Top tip if you are going before 1837 and/or beyond the UK - consider excepting 2 pieces of evidence and/or steps sideways to break your wall.
Let me introduce to Darthula (the wall I finally broke today after 20 years today).
So what did I know 20 years ago from a census I knew she was born St John's Newfoundland c 1813.
If you are researching people before 1837 and need to back to 1770'ish use the Newspaper archives to assist you.
By finding six lines below in an 1834 newspaper (which I had actually ignored for 5 years), it finally allowed me to trace her ancestors: -
"August 28, at St. Augustine's Church, Bristol, by the Rev. W. Millner, Charles Bullen, youngest son of James Davis, Esq., of Weymouth, to Darthula Eliza, youngest daughter of the late Elias Rowe, esq., of St. John's, Newfoundland, and niece to he late Mrs Danson, of park Street, Bristol."
By taking a step backward - and searching for who was Elizabeth Danson - I discovered that she was one of the two sister's of to Elias. Children of Elias and Eliza Rowe.
My 20 year wall now(in simple terms) now broken!
And finally - do not forget the potential power of the internet and websites such as Rootschat. I have over 20 years made numerous contacts with distant relatives and shared thoughts and information about our ancestors (and also agreed to disagree).
Goodluck
Billy