Ciao Canterina, 
 
I can �t think of an equivalent expression.  Possibly:
 
"Tidy up your ideas!" (As you suggest.)
 
"Get your ideas in order!" (Put your ideas into a more sensible arrangement!)
 
"Get yourself sorted out!" (Solve your problems and lead a �normal � life!)
"Straighten up your ideas!"  (Improve your bad attitude!)
 
"Smarten up your ideas!"  (Improve your bad attitude.)
 
"Think straight!" (Stop thinking in a confused fashion!)
 
"Put your house in order!" (Make the changes necessary to lessen your personal problems!)
 
"Put everything into apple-pie order!" (Arrange everything very neatly and tidily!)
 
I hope that this helps.
 
Les