The Holy Prophet of Islam (peace be upon him and his progeny) said:
إذا رَأَيْتُمُ الْمُؤْمِنَ صَمُوتاً فَادْنُوْا مِنْهُ فَإنَّهُ يُلْقِى الحِكْمَةَ وَ الْمُؤْمِنُ قَلِيلُ الْكَلامِ كَثِيرُ الْعَمَلِ وَ الْمُنافِقُ كَثِيرُ الْكَلامِ قَلِيلُ الْعَمَلِ
When you find a believer silent, approach him because you will hear wise sayings. Believers talk less and are action oriented whereas hypocrites are talkative and inexperienced. 1
Man’s power is not unlimited and everlasting. Therefore, when his energies are used in one direction, there will be less energy left for other things. So it is not surprising if talkative people are short on actions and experience.
The Holy Prophet of Islam (peace be upon him and his progeny) always advocated positive and effective living, says that believers are those who emphasize deeds, not just words, while he considers the opposite attribute of all talk and no action as the sign of the hypocrites.