The more you love a person, the more you want to mention them. Praying Durood Shareef and sending blessings onto the prophet PBUH is classified as an act of worship and it is our way of vocalising our love for him. A believer should be frequent with sending Durood upon the prophet if he wishes to befriend the prophet and have him close as an intercessor on the day of Reckoning. Allah has always instructed us to obey both Allah and his Rasul, to love both Allah and his Rasul and to follow both Allah and his Rasul. Therefore, our sending of Durood to the prophet Muhammad PBUH is most pleasing to Allah.
We come to know that the prophet Muhammad PBUH had mentioned of his own Durood in which he would pray 100 times a day. With All good deeds, Allah being the most generous and most benevolent will always record more than what we had actually perform. For example, every blessing sent upon the Nabi will entail rewards in our accounts ten times greater. Now on top of that, we have narrations which mention that for every good deed we do Allah will multiply it by 10 to 70 folds or like the above Quran Ayah where it grows in the hundreds. As a result, we find ourselves with very few actions performed but due to the sincerity of it, Allah made it out like you had done a humongous thing.
Here the determination was greater as the man brought a camel which was properly reigned and healthy, hence he received a compensation seventy times greater.
Lastly our daily recitation of Durood will be a means of deterring us from sinning as when we ourselves remember him, we feel his presence and suddenly we feel shameful to turn towards evil, knowing that this desirable action of mines could cause some friction between me and the Rasul which causes greater separation between me and Allah. This is classified as Taqwa (Piety) of the heart.
This is why in life we should strive in good deeds regardless of our situation, as Allah has made it such that we can keep doing small petty deeds but with hope of immensely big rewards. Pray a simple Allahu Akbar whilst driving to work or send Durood to the Prophet during your daily jog. Raise your hands a little longer after the night prayer and give small amounts to charity.
Inshallah Allah will reward you with barakah in your life and your Rizq (Sustenance). Then see how your life changes, suddenly you have more time, more wealth, etc. then you should pray more Quran and Durood and give more in charity as a sign of gratitude to your lord most high.