interactive function at GNU Emacs startup

[scm]

Greetings,

I would like to have a certain interactive function that I use quite
often start up every time I run GNU Emacs. What is the best way of
going about this?

In my .emacs I tried the following functions, to no avail:

(load "~/foo-function.el")
(execute-extended-command "foo-function")

Any ideas?

Thanks in advance to anyone who has the time to spare.