もしもう少しがまん強ければ、きみは成功していただろう。

With a little more patience, you would have succeeded.

もしもう少(すこ)しがまん強(づよ)ければ、きみは成功(せいこう)していただろう。

Moshi mōsukoshi gamanzuyokereba, kimi wa seikōshiteita darou.

若し (もし)

if; in case; supposing

もう少し (もうすこし)

a bit more; a bit longer

我慢強い (がまんづよい)

(very) patient; persevering

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: キョウ、ゴウ、つよ.い、つよ.まる、つよ.める、し.いる、こわ.い

Meaning: strong

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