two rules of thumb for how long a spell takes (these are the two I use)
wait 3 days after casting to see if there is progress or wait a full cycle of the moon from the time you cast.
It will take time, more or less depending on what you are trying to accomplish. Also your perception of the casting and how well or how badly it went can effect the spell. Once you have cast do your best not to judge your abilities or the likely hood of success. That is my personal rule, others have their own.
A word on patience, if you are looking for magic to cure all the ills in your life immediately, you are on the wrong path. Magick is a process, it takes times for spells to play out. Change takes time to be seen. Have patience and faith.