1) Adamant 2) Ambitious 3) Ascertained 4) Bent 5) Brave 6) Concentrated 7) Dead set 8) Dedicated 9) Definite 10) Dictated 11) Earnest 12) Firm 13) Fixed on 14) Focused 15) Forceful 16) Gritty 17) Headstrong 18) Hellbent 19) Intense 20) Observed 21) Prearranged 22) Predetermined 23) Purposeful 24) Purposive 1) Certain 2) Decided 3) Firm 4) Firm resolve 5) Go-getting 6) Gritty 7) Headstrong 8) Intent on 9) Keeping at it 10) Motivated 11) Persistent 12) Pushy 13) Resolute 14) Resolved 15) Ruthless 16) Set on 17) Settled 18) Single-minded 19) Steadfast 20) Striving 21) Strong-minded 22) Strong-willed 23) Strongly motivated 
• (a.) Decided; resolute. • (imp. & p. p.) of Determine
De·ter'mined adjective Decided; resolute. 'A determined foe.' Sparks. 
[adj] - devoting full strength and concentrated attention to 2. [adj] - determined or decided upon as by an authority 3. [adj] - characterized by great determination 4. [adj] - having been learned or found or determined especially by investigation
dictated adjective determined or decided upon as by an authority; `date and place are already determined`; `the dictated terms of surrender`; `the time set for the launching`
resolute; staunch: the determined defenders of the Alamo. · decided; settled; resolved. · (of a phonetic feature) predictable from its surrounding context.
[Literary terms] strongly motivated to succeed