Middle game problem

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Ahmed_Talaat_Elkinan

Dear Friends.

I have a severe problem in my chess carrer , i donot know exactly what to do in the middle game,

i know all the strategic and positional issues (Controling the center, advantage of the two bishops, Knight outposts, open files & diagonals ,gaining space, Queen pawn majority ,Pawn structure .......etc)

But when i start playing in the middle phase i feel that i completely lost,

i want a useful material (not necessary a book) to help me fix this issue