Stake everything you raised, it'll get you nowhere (5,5)
I believe the answer is:
blind alley
'it'll get you nowhere' is the definition.
I can't judge whether this defines the answer.
'stake everything you raised' is the wordplay.
'stake' becomes 'blind' (I can't explain this - if you can you should give a lot more credence to this answer).
'everything' becomes 'all' (all things).
'you' becomes 'ye' (historical version of 'you').
'raised' says the letters should be written in reverse (going up in a down clue).
'ye' backwards is 'ey'.
'blind'+'all'+'ey'='BLIND ALLEY'
Can you help me to learn more?
(Other definitions for blind alley that I've seen before include "Cul-de-sac" , "dead-end position" , "no escape route" , "no progress there" .)