7 of Wands (like King of Wands, Ace of Wands and 4 of Wands) is Fire of Fire. The Fire of Fire energy shows 'formidable determination and resolve' (Benebell Wen), is extremely gung ho, can have a one-track mind, and may be conqueror (albeit a charismatic one), a cult leader, maybe even a Hitler.
If these traits sound negative, sorry, I tend to see the downside of Fire before the upside. Fire is, after all, a wild and destructive force. A useful tool if contained and controlled, but always dangerous. At least the number 7 has its influence here, thus the 7 of Wands shows that despite the seeming struggle involved, important developments are happening, and there is progress, sometimes a leap ahead, sometimes it's the unknown causing the stress, but whatever, the 7 of Wands is a time of challenge. Others may be questioning us or slowing us down, we may be questioning or slowing ourselves down, whichever it is, there is some resistance requiring valour or courage.
I guess the key word here is resistance. The 7 of Wands can indicate a feeling that no matter what you try to do, big or small, you have something to fight against in order to get it done. I remember the other night watching the premiere episode of the show '11.22.63', a character said, 'When you push the past, the past pushes back.' (It's a story about time travel, and the characters are discussing how the past doesn't seem to want to be changed and throws up blocks when you try to change it.) The present can feel that way, too! When you push the present, when you push the status quo, the present often feels like it's pushing back! Want to post an image to your blog? Your PC pushes back. Want to get to work on time? The train timetable pushes back. Want to buy a house? Other buyers push back. Want to lose some weight? The chocolate pushes back!
But the 7 of Wands is Fire of Fire, and the figure in this card may be facing these challengers alone, and no one seems to have his back, there's no wall he's backed up against, nothing but clear blue sky and at least he literally seems to have the 'upper hand'. In any case, he shows no sign of giving up. He is fighting Fire with Fire!
If life is pushing back at you today, rise up to meet the challenge. Your foe may be only yourself, after all.