Musical Writing Forum developing melodies

hello, i hope you're doing well..

i got a question for you..

how do you go about developing your melodies? and i don't mean the cadence necessarily.. i mean the actual melodies..
the up and down of the notes?
do you have any particular way that you go about doing this?
is their any technique? any mechanics? any inspiration?

anything at all that you could tell me would be of great help..

thanx

L8TR
bruce