もう少し忍耐があれば、きみは成功しただろう。

With a little more patience, you could have succeeded.

もう少(すこ)し忍耐(にんたい)があれば、きみは成功(せいこう)しただろう。

Mōsukoshi nintai ga areba, kimi wa seikōshita darou.

もう少し (もうすこし)

a bit more; a bit longer

忍耐 (にんたい)

endurance; perseverance; patience

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

有る (ある)

to be (usu. of inanimate objects); to exist; to live; to have; to be located; to be equipped with; to happen; to come about

君 (きみ)

you; buddy; pal; monarch; ruler; sovereign; (one's) master

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

成功 (せいこう)

success; hit

だ (だ)

be; is; indicates past or completed action; indicates light imperative

Readings: ショウ、すく.ない、すこ.し

Meanings: few, little

Readings: ニン、しの.ぶ、しの.ばせる

Meanings: endure, bear, put up with, conceal, secrete, spy, sneak

Readings: タイ、た.える

Meanings: -proof, enduring

Readings: セイ、ジョウ、な.る、な.す、 -な.す

Meanings: turn into, become, get, grow, elapse, reach

Readings: コウ、ク、いさお

Meanings: achievement, merits, success, honor, credit