Allah will always reward those who give thanks:

Why should Allah punishyou if you are thankful and believe? Allah is
All-Thankful, All-Knowing. (Surat an-Nisa', 147)
Allah's signs and the wisdom in His proofs may only be fully
understood thanks to the understanding and sensitivity possessed by
those who give much thanks. But ungrateful andinsensitive people
cannot understand the wisdom inAllah's signs, and may not even be
aware of their existence.