its usually the case with all original music. and also the reason why most big producers make cooler (but bader sounding) tracks early in their career. and also again usually the reason why they got popular in the first place. the human brain is limited so to add randomness usually helps.

Emulate the arrangements of tunes you like - seriously, it will help you big time!

Copy and paste the whole 8 or 16 bar loop over the length of tune you want. The subtract bits to create an arrangement. once that is done, go through and create fills and little complimentary elements.