Tor fixed entry point
In case you only trust your very own tor relay server as an entry point:
Enter your fingerprint hash with a leading dollar sign into the torrc file. The file might exist under the path Tor Browser/Browser/TorBrowser/Data/Tor depending on your installation and OS.
EntryNodes $123456789abcdef StrictEntryNodes 1
From a security point of view it might worsen things doing so. Think about negative side effects when using only one entry point again and again. Better get a list of trustet nodes of friends too. In that case append them to the line as follows:
EntryNodes $123456789abcdef,$234567,$456789 StrictEntryNodes 1