I am very happy right now that I decided to go with top altcoins but it is becoming very tempting to sell some.
Do you just buy top altcoins recently? IMO, it should be done in the bearish season. Or you have bought gradually since the early of this year at least. If you buy now, the prices of some altcoins have been quite expensive. Anyway, it is no problem if you want to sell some of your altcoins. You are not a must to sell the the peak prices, you can sell whenever it reaches your target.
What is stopping me from selling a lot is we are not even in 2025 yet and I feel we have many more months of Bitcoin and Altcoins pumping to come so we can go a lot higher.
Q1 2025 looks the best time for the pump of crypto coins. However, there is no guarantee that the prices will be higher. Some altcoins may reach their peak prices earlier. And in the next year, they may gradually decline a bit. This can happen because not every coin will have the same pattern in improvement. Just focus on your target on taking profits!!