修練(しゅうれん)training, drill, practice, practising, discipline

まだ修練(しゅうれん)が足(た)りないので、技(わざ)が未完成(みかんせい)です。

The technique is still incomplete because there hasn't been enough training yet. {training, drill, practice, practising, discipline}

弟子(でし)：「師匠(ししょう)のようになる為(ため)に修練(しゅうれん)を積(つ)んでいます！」

Disciple: "I am undergoing training to become like my master!" {training, drill, practice, practising, discipline}

道場(どうじょう)は、僕(ぼく)にとって精神(せいしん)を修練(しゅうれん)するための場所(ばしょ)だった。

The dojo was a place for me to practice and discipline my spirit. {training, drill, practice, practising, discipline}

コーチ：「修練(しゅうれん)が足(た)りないぞ！プロになるには多少(たしょう)の苦(くる)しみも必要(ひつよう)だ！」

Coach: "You're not training enough! You need to endure some hardship to become a professional!" {training, drill, practice, practising, discipline}

いかなる修練(しゅうれん)を積(つ)めば、暴言(ぼうげん)を吐(は)かれてもへこたれない精神(せいしん)が育(そだ)つのだろうか？

What kind of training should I undergo to develop a spirit that won't be discouraged even when faced with harsh words? {training, drill, practice, practising, discipline}