Clutch got soft today from last night. suggestions

Hey guys,
I'm a pretty mechanically inclined person but just wanted to get some input on what y'all. Anyways here's what's up: I was heading to work today and got in my truck and I push in the clutch and it's really soft and spongy but it comes back up it wasn't like when I got off yesterday morning it was fine and stiff and hard but now it's soft and I just wanted to see what people thought plan on putting up on the lift hopefully tomorrow and check a few things and check the slave master cylinder and may drain the transmission fluid and check it. Any input would be appreciated. Thanks fellas.

 

I'd check your clutch master and slave cylinders for leaks. If no leaks, try flushing and bleeding the sysrem with fresh fluid.

 

That's what I was thinking it was and I am going to flush and bleed it out today.